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DJI Onboard SDK
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Telemetry API through asynchronous "Broadcast"-style messages. More...
#include <DJI_Broadcast.h>
Public Types | |
| enum | FREQ { FREQ_0HZ = 0, FREQ_1HZ = 1, FREQ_10HZ = 2, FREQ_50HZ = 3, FREQ_100HZ = 4, FREQ_HOLD = 5, FREQ_200HZ = 6, FREQ_400HZ = 7 } |
Public Member Functions | |
| DataBroadcast (Vehicle *vehicle=0) | |
| Telemetry::TimeStamp | getTimeStamp () const |
| Telemetry::SyncStamp | getSyncStamp () const |
| Quaternion | getQuaternion () const |
| Vector3f | getAcceleration () const |
| Vector3f | getVelocity () const |
| Vector3f | getPalstance () const |
| Telemetry::VelocityInfo | getVelocityInfo () const |
| Telemetry::GlobalPosition | getGlobalPosition () const |
| Telemetry::RelativePosition | getRelativePosition () const |
| Telemetry::GPSInfo | getGPSInfo () const |
| Telemetry::RTK | getRTKInfo () const |
| Telemetry::Mag | getMag () const |
| Telemetry::RC | getRC () const |
| Telemetry::Gimbal | getGimbal () const |
| Telemetry::Status | getStatus () const |
| Telemetry::Battery | getBatteryInfo () const |
| Telemetry::SDKInfo | getSDKInfo () const |
| void | setBroadcastFreq (uint8_t *dataLenIs16, VehicleCallBack callback=0, UserData userData=0) |
| ACKErrorCode | setBroadcastFreq (uint8_t *dataLenIs16, int wait_timeout) |
| void | setBroadcastFreqDefaults () |
| ACKErrorCode | setBroadcastFreqDefaults (int timeout) |
| void | setBroadcastFreqToZero () |
| ProtocolLayer * | getProtocol () const |
| void | setProtocol (ProtocolLayer *value) |
| Vehicle * | getVehicle () const |
| void | setVehicle (Vehicle *vehiclePtr) |
| void | setVersionDefaults (uint8_t *frequencyBuffer) |
| void | setFreqDefaultsM100_31 (uint8_t *frequencyBuffer) |
| void | setFreqDefaults (uint8_t *frequencyBuffer) |
| void | setUserBroadcastCallback (VehicleCallBack callback, UserData userData) |
Static Public Member Functions | |
| static void | unpackCallback (Vehicle *vehicle, RecvContainer recvFrame, UserData userData) |
| static void | setFrequencyCallback (Vehicle *vehicle, RecvContainer recvFrame, UserData userData) |
Public Attributes | |
| VehicleCallBackHandler | unpackHandler |
Telemetry API through asynchronous "Broadcast"-style messages.
Broadcast telemetry is sent by the FC as push data - whenever an OES connects to the API port on FC, broadcast telemetry starts pushing data to the OES.
Frequencies can be set through DJI Assistant 2 or through these APIs.
| Vector3f DataBroadcast::getAcceleration | ( | ) | const |
Get acceleration from local cache
The acceleration may be in body or ground frame, fused or raw, based on settings on DJI Assistant 2's SDK page.
| Telemetry::Battery DataBroadcast::getBatteryInfo | ( | ) | const |
Get Battery Info from local cache
| Telemetry::Gimbal DataBroadcast::getGimbal | ( | ) | const |
Get Gimbal data from local cache
| Telemetry::GlobalPosition DataBroadcast::getGlobalPosition | ( | ) | const |
Get Globalc Position (LLA and metadata) from local cache
The returned Lat/Lon values are in rad.
| Telemetry::GPSInfo DataBroadcast::getGPSInfo | ( | ) | const |
Get GPS Info from local cache
This feature provides detailed GPS info. Available on A3/N3/M600. You need to enable it separately on DJI Assistant 2's SDK page.
| Telemetry::Mag DataBroadcast::getMag | ( | ) | const |
Get Magnetometer data from local cache
The returned value is calibrated mag data, 1000 < |mag| < 2000 for normal operation
| Vector3f DataBroadcast::getPalstance | ( | ) | const |
Get Angular Rates from local cache
The angular rates may be in body or ground frame, fused or raw, based on settings on DJI Assistant 2's SDK page.
| Quaternion DataBroadcast::getQuaternion | ( | ) | const |
Get quaternion data from local cache
| Telemetry::RC DataBroadcast::getRC | ( | ) | const |
Get RC channel data from local cache
| Telemetry::RelativePosition DataBroadcast::getRelativePosition | ( | ) | const |
Get Relative position (x,y,z) from local cache
The returned value is relative to your home location.
| Telemetry::RTK DataBroadcast::getRTKInfo | ( | ) | const |
Get RTK data from local cache
This feature provides detailed RTK info. Available on A3/M600. You need to enable it separately on DJI Assistant 2's SDK page.
| Telemetry::SDKInfo DataBroadcast::getSDKInfo | ( | ) | const |
Get SDK Control Mode/Authority info from local cache
| Telemetry::Status DataBroadcast::getStatus | ( | ) | const |
Get Status (flight status, mode, gear and error) from local cache
| Telemetry::SyncStamp DataBroadcast::getSyncStamp | ( | ) | const |
Get software sync timestamp from local cache
Note that this is unrelated to the hardware sync subscription.
| Telemetry::TimeStamp DataBroadcast::getTimeStamp | ( | ) | const |
Get timestamp from local cache
| Vector3f DataBroadcast::getVelocity | ( | ) | const |
Get velocity from local cache
The velocity may be in body or ground frame based on settings on DJI Assistant 2's SDK page.
| Telemetry::VelocityInfo DataBroadcast::getVelocityInfo | ( | ) | const |
Get Velocity Info (health) from local cache
This data is received along with velocity.
| void DataBroadcast::setBroadcastFreq | ( | uint8_t * | dataLenIs16, |
| VehicleCallBack | callback = 0 , |
||
| UserData | userData = 0 |
||
| ) |
Non-blocking call for Frequency setting
| dataLenIs16 | Array of length 16 that has frequency values for each topic |
| callback | Callback function you want called upon ACK |
| userData | Additional data you want the callback function to have access to |
| ACKErrorCode DataBroadcast::setBroadcastFreq | ( | uint8_t * | dataLenIs16, |
| int | wait_timeout | ||
| ) |
Blocking call for Frequency setting
| dataLenIs16 | Array of length 16 that has frequency values for each topic |
| wait_timeout | Time(in s) you want the function to wait for an ACK |
| void DataBroadcast::setBroadcastFreqDefaults | ( | ) |
Non-Blocking call for setting default frequencies
| ACKErrorCode DataBroadcast::setBroadcastFreqDefaults | ( | int | timeout | ) |
Blocking call for setting default frequencies
| wait_timeout | Time(in s) you want the function to wait for an ACK |
| void DataBroadcast::setBroadcastFreqToZero | ( | ) |
Non-Blocking call for setting all frequencies to zero


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Waiting List initiative: More than 300K surgeries conducted
by Egypt Today staffCAIRO – 25 November 2019: In an attempt to alleviate the burden on patients on waiting lists, a total of 3,874 medical surgeries were conducted under President Abdel Fatah al-Sisi's initiative launched in July 2018, the Ministry of Health's statement read.
According to the Sunday statement, 125,822 surgeries of cardiac catheterization, 19,774 open-heart surgeries, 101,725 ocular surgeries, 12,566 neurosurgeries and other operations were carried out until November 24, 2019.
Catheterizations topped the performed surgeries by 42 percent followed by ocular surgeries by 33.8 percent, the statement continued.
Some 62 percent of the surgeries were conducted in the ministry’s hospitals followed by 26 percent in the university hospitals nationwide.
In October 2018, President Sisi launched “100 Million Healthy Lives” initiative to completely eliminate Hepatitis C from Egypt 2022.


슬로건
The power of the Web is in its universality, Access by everyone regardless of disability is an essential aspect.
Tim Berners - Lee , W3C Director and inventor of the World Wide Web
웹표준 핵심 가이드북 2 출시! 선착순 500명 한정으로 증정.
The power of the Web is in its universality, Access by everyone regardless of disability is an essential aspect.
Tim Berners - Lee , W3C Director and inventor of the World Wide Web


Thanksgiving Outfits: Ideas Inspired by Kate Middleton, Lizzo and More Celebs
by Amy LeeDo you know what you're wearing for Thanksgiving?
If you're stumped on what to wear for the big holiday, we've got you covered with the help of celebrity looks to inspire your look for the turkey feast.
Depending on your Thanksgiving plans, the outfit can vary. Are you heading home to reunite with the whole family? Well, you always want to look your best for grandma, but comfort is key, too. If you're laying low and celebrating with close friends instead, a no-nonsense leggings outfit will do (optimal stretch is much appreciated). However, if spending the holiday with your significant other's parents, it's best to dress to impress (if it's particularly for the first time).
Wherever your plans take you, browse through ET Style's top outfit ideas for Thanksgiving, inspired by what our favorite style stars have worn -- from Kate Middleton's blazer look to Lizzo's cool dress-and-boots ensemble.
Kate Middleton
Polish and comfort combined is the Duchess of Cambridge's jam, which is exactly what most of us strive for when it comes to a family Thanksgiving gathering. Elevate your go-to white T-shirt with a check blazer, styled with a burgundy-colored pant for a pop of festive color. Finish off with black suede pumps or flat boots for a more casual vibe. A pair of simple, elegant earrings add a touch of glam.
GET THE LOOK:
Ruched Sleeve Windowpane Blazer
1.STATE
Nordstrom
Ruched Sleeve Windowpane Blazer
1.STATE
$139 at Nordstrom
The Crew Tee
x karla
Amazon
The Crew Tee
x karla
$30 at Amazon
The Ankle Pant in Button Hem
Ann Taylor
Ann Taylor
The Ankle Pant in Button Hem
Ann Taylor
$98 at Ann Taylor
Leather Belt with Gold Buckle
Vonsely
Amazon
Leather Belt with Gold Buckle
Vonsely
$14 at Amazon
Stella Pump
Botkier
Botkier
Stella Pump
Botkier
$128 at Botkier
Elegance Earrings
Shashi
Shopbop
Elegance Earrings
Shashi
$42 at Shopbop
Lizzo
The "Truth Hurts" singer's recent outfit is the perfect example of looking dressy without trying too hard -- and a ribbed knit frock is the answer (plus, it's cozy!). We love how Lizzo effortlessly teamed the dress with heeled combat boots for a hint of edge and cool. Feel naked without any jewelry? Add on oversized hoop earrings and layers of necklaces as she did.
GET THE LOOK:
Curve Knitted Midi Dress with Side Split in Khaki
Vero Moda
ASOS
Curve Knitted Midi Dress with Side Split in Khaki
Vero Moda
$56 at ASOS
Solanie Booties
American Rag
Macy's
Solanie Booties
American Rag
$80 at Macy's
Equilibrium Hoop Earrings
Maison Miru
Maison Miru
Equilibrium Hoop Earrings
Maison Miru
$79 at Maison Miru
Layered Moon Necklace
Mejuri
Mejuri
Layered Moon Necklace
Mejuri
$65 at Mejuri
Cindy Crawford
We love jeans and the supermodel icon does too! Appear casual but still look put-together by elevating denim and a nubby high-neck sweater with a trendy faux leather coat and suede booties.
GET THE LOOK:
Faux Leather Belted Maxi Coat
Unique21
ASOS
Faux Leather Belted Maxi Coat
Unique21
$127 at ASOS
Wide Rib Turtleneck Sweater
Bop Basics
Shopbop
Wide Rib Turtleneck Sweater
Bop Basics
$98 at Shopbop
501 Skinny
Levi's
Nordstrom
501 Skinny
Levi's
$128 at Nordstrom
The Regan Boot
Madewell
Nordstrom
The Regan Boot
Madewell
$178 at Nordstrom
Alessandra Ambrosio
For the gal who truly wants to be comfortable and doesn't want anything constricting her stomach during the epic feast, stretchy, soft leggings are essential. An adorable printed sweater looks great on top of the athleisure staple, just like how the Victoria's Secret model styled it, and throw on your favorite sneakers.
GET THE LOOK:
Perci Hearts Sweater
Rails
Neiman Marcus
Perci Hearts Sweater
Rails
$168 at Neiman Marcus
Wunder Lounge Pant 28" Updated Fit
Lululemon
Lululemon
Wunder Lounge Pant 28" Updated Fit
Lululemon
$98 at Lululemon
UltraBoost 19 Running Shoe
Adidas
Nordstrom
UltraBoost 19 Running Shoe
Adidas
$180 at Nordstrom
Selena Gomez
If you're looking to dress to impress, the "Lose You to Love Me" singer's super chic skirt outfit is it. The paper bag midi skirt accentuates the waist while maintaining a modest length.
GET THE LOOK:
Sleeveless Mock Neck Tank
Express
Express
Sleeveless Mock Neck Tank
Express
REGULARLY $30
$18 at Express
Paper-bag Skirt
H&M
H&M
Paper-bag Skirt
H&M
$40 at H&M
Braylene Vinyl Slingback Block Heel Pumps
Antonio Melani
Dillard's
Braylene Vinyl Slingback Block Heel Pumps
Antonio Melani
$98 at Dillard's
Mini Metallic Crossbody Bag
Forever 21
Forever 21
Mini Metallic Crossbody Bag
Forever 21
$18 at Forever 21
Top Notch XL Earrings
8 Other Reasons
Revolve
Top Notch XL Earrings
8 Other Reasons
$61 at Revolve
Each product has been selected, and each product’s style has been reviewed, by our editorial team; however, we may receive affiliate commissions from some links to products on this page. Prices listed are subject to change by the retailer.


This page provides an overview of the major themes in pandas’ development. Each of these items requires a relatively large amount of effort to implement. These may be achieved more quickly with dedicated funding or interest from contributors.
An item being on the roadmap does not mean that it will necessarily happen, even with unlimited funding. During the implementation period we may discover issues preventing the adoption of the feature.
Additionally, an item not being on the roadmap does not exclude it from inclusion in pandas. The roadmap is intended for larger, fundamental changes to the project that are likely to take months or years of developer time. Smaller-scoped items will continue to be tracked on our issue tracker.
See Roadmap Evolution for proposing changes to this document.
Pandas Extension types allow for extending NumPy types with custom data types and array storage. Pandas uses extension types internally, and provides an interface for 3rd-party libraries to define their own custom data types.
Many parts of pandas still unintentionally convert data to a NumPy array. These problems are especially pronounced for nested data.
We’d like to improve the handling of extension arrays throughout the library, making their behavior more consistent with the handling of NumPy arrays. We’ll do this by cleaning up pandas’ internals and adding new methods to the extension array interface.
Currently, pandas stores text data in an object -dtype NumPy array. The current implementation has two primary drawbacks: First, object -dtype is not specific to strings: any Python object can be stored in an object -dtype array, not just strings. Second: this is not efficient. The NumPy memory model isn’t especially well-suited to variable width text data.
object
To solve the first issue, we propose a new extension type for string data. This will initially be opt-in, with users explicitly requesting dtype="string". The array backing this string dtype may initially be the current implementation: an object -dtype NumPy array of Python strings.
dtype="string"
To solve the second issue (performance), we’ll explore alternative in-memory array libraries (for example, Apache Arrow). As part of the work, we may need to implement certain operations expected by pandas users (for example the algorithm used in, Series.str.upper). That work may be done outside of pandas.
Series.str.upper
Apache Arrow is a cross-language development platform for in-memory data. The Arrow logical types are closely aligned with typical pandas use cases.
We’d like to provide better-integrated support for Arrow memory and data types within pandas. This will let us take advantage of its I/O capabilities and provide for better interoperability with other languages and libraries using Arrow.
We’d like to replace pandas current internal data structures (a collection of 1 or 2-D arrays) with a simpler collection of 1-D arrays.
Pandas internal data model is quite complex. A DataFrame is made up of one or more 2-dimensional “blocks”, with one or more blocks per dtype. This collection of 2-D arrays is managed by the BlockManager.
The primary benefit of the BlockManager is improved performance on certain operations (construction from a 2D array, binary operations, reductions across the columns), especially for wide DataFrames. However, the BlockManager substantially increases the complexity and maintenance burden of pandas.
By replacing the BlockManager we hope to achieve
Substantially simpler code
Easier extensibility with new logical types
Better user control over memory use and layout
Improved micro-performance
Option to provide a C / Cython API to pandas’ internals
See these design documents for more.
The code for getting and setting values in pandas’ data structures needs refactoring. In particular, we must clearly separate code that converts keys (e.g., the argument to DataFrame.loc) to positions from code that uses these positions to get or set values. This is related to the proposed BlockManager rewrite. Currently, the BlockManager sometimes uses label-based, rather than position-based, indexing. We propose that it should only work with positional indexing, and the translation of keys to positions should be entirely done at a higher level.
DataFrame.loc
Indexing is a complicated API with many subtleties. This refactor will require care and attention. More details are discussed at https://github.com/pandas-dev/pandas/wiki/(Tentative)-rules-for-restructuring-indexing-code
Numba is a JIT compiler for Python code. We’d like to provide ways for users to apply their own Numba-jitted functions where pandas accepts user-defined functions (for example, Series.apply(), DataFrame.apply(), DataFrame.applymap(), and in groupby and window contexts). This will improve the performance of user-defined-functions in these operations by staying within compiled code.
Series.apply()
DataFrame.apply()
DataFrame.applymap()
We’d like to improve the content, structure, and presentation of the pandas documentation. Some specific goals include
Overhaul the HTML theme with a modern, responsive design (GH15556)
Improve the “Getting Started” documentation, designing and writing learning paths for users different backgrounds (e.g. brand new to programming, familiar with other languages like R, already familiar with Python).
Improve the overall organization of the documentation and specific subsections of the documentation to make navigation and finding content easier.
Pandas uses airspeed velocity to monitor for performance regressions. ASV itself is a fabulous tool, but requires some additional work to be integrated into an open source project’s workflow.
The asv-runner organization, currently made up of pandas maintainers, provides tools built on top of ASV. We have a physical machine for running a number of project’s benchmarks, and tools managing the benchmark runs and reporting on results.
We’d like to fund improvements and maintenance of these tools to
Be more stable. Currently, they’re maintained on the nights and weekends when a maintainer has free time.
Tune the system for benchmarks to improve stability, following https://pyperf.readthedocs.io/en/latest/system.html
Build a GitHub bot to request ASV runs before a PR is merged. Currently, the benchmarks are only run nightly.
Pandas continues to evolve. The direction is primarily determined by community interest. Everyone is welcome to review existing items on the roadmap and to propose a new item.
Each item on the roadmap should be a short summary of a larger design proposal. The proposal should include
Short summary of the changes, which would be appropriate for inclusion in the roadmap if accepted.
Motivation for the changes.
An explanation of why the change is in scope for pandas.
Detailed design: Preferably with example-usage (even if not implemented yet) and API documentation
API Change: Any API changes that may result from the proposal.
That proposal may then be submitted as a GitHub issue, where the pandas maintainers can review and comment on the design. The pandas mailing list should be notified of the proposal.
When there’s agreement that an implementation would be welcome, the roadmap should be updated to include the summary and a link to the discussion issue.


Angular allows services to declare other services as dependencies needed for construction of their instances.
To declare dependencies, you specify them in the factory function signature and annotate the
function with the inject annotations either using by setting the $inject
property, as an array of
string identifiers or using the array notation. Optionally the $inject
property declaration can be
dropped (see "Inferring $inject
" but note that that is currently an experimental feature).
Using the array notation:
function myModuleCfgFn($provide) { $provide.factory('myService', ['dep1', 'dep2', function(dep1, dep2) {}]); }
Using the $inject property:
function myModuleCfgFn($provide) { var myServiceFactory = function(dep1, dep2) {}; myServiceFactory.$inject = ['dep1', 'dep2']; $provide.factory('myService', myServiceFactory); }
Using DI inference (incompatible with minifiers):
function myModuleCfgFn($provide) { $provide.factory('myService', function(dep1, dep2) {}); }
Here is an example of two services, one of which depends on the other and both of which depend on other services that are provided by the Angular framework:
/** * batchLog service allows for messages to be queued in memory and flushed * to the console.log every 50 seconds. * * @param {*} message Message to be logged. */ function batchLogModule($provide){ $provide.factory('batchLog', ['$interval', '$log', function($interval, $log) { var messageQueue = []; function log() { if (messageQueue.length) { $log('batchLog messages: ', messageQueue); messageQueue = []; } } // start periodic checking $interval(log, 50000); return function(message) { messageQueue.push(message); } }]); /** * routeTemplateMonitor monitors each $route change and logs the current * template via the batchLog service. */ $provide.factory('routeTemplateMonitor', ['$route', 'batchLog', '$rootScope', function($route, batchLog, $rootScope) { $rootScope.$on('$routeChangeSuccess', function() { batchLog($route.current ? $route.current.template : null); }); }]); } // get the main service to kick off the application angular.injector([batchLogModule]).get('routeTemplateMonitor');
Things to notice in this example:
batchLog
service depends on the built-in $interval
and
$log
services, and allows messages to be logged into the
console.log
in batches.routeTemplateMonitor
service depends on the built-in $route service as well as our custom batchLog
service.


I made this for those sites that force you to register to view content. The mailinator home page gives you a random inbox, but selecting it is kind of annoying, and some sites complain about things like using the same first name, last name, username, and/or password. This will give you all the details you need in easy-to-copy-and-paste format.
It generates the password based on the end of the md5 hash of the username, limited to whatever password requirements you give it. Nice for sites that force digits or upper case letters. It also means you can find the password in the future if you need it by recalculating the md5 hash yourself. If you find out the requirements after putting in the other info you can change the parameters without it updating new random info.
There is also a checkbox to add a random 3 digit number to the end of the usernames. This is nice for sites where every username is taken. I tested the gmail registration and every single combo given was taken, none of the ones with random numbers were though.
It also gives an alternative domain to use if mailinator.com is blocked. If the alternative is blocked as well it lets you get another one without changing all the other info.


Insieme di funzioni di supporto al volume "Laboratorio di Statistica con R", Iacus-Masarotto, MacGraw-Hill Italia, 2006. This package contains sets of functions defined in "Laboratorio di Statistica con R", Iacus-Masarotto, MacGraw-Hill Italia, 2006. Function names and docs are in italian as well.
| Version: | 1.0.9 |
| Depends: | R (≥ 2.10) |
| Published: | 2018-04-12 |
| Author: | Stefano M.Iacus and Guido Masarotto |
| Maintainer: | Stefano M.Iacus <stefano.iacus at unimi.it> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| NeedsCompilation: | no |
| CRAN checks: | labstatR results |
| Reference manual: | labstatR.pdf |
| Package source: | labstatR_1.0.9.tar.gz |
| Windows binaries: | r-devel: labstatR_1.0.9.zip, r-release: labstatR_1.0.9.zip, r-oldrel: labstatR_1.0.9.zip |
| OS X binaries: | r-release: labstatR_1.0.9.tgz, r-oldrel: labstatR_1.0.9.tgz |
| Old sources: | labstatR archive |
Please use the canonical form https://CRAN.R-project.org/package=labstatR to link to this page.


Google adds 10 more games to Stadia launch lineup
Follow Polygon online:
by Michael McWhertorGoogle is nearly doubling the number of games that will be available for Stadia, the company’s new game streaming technology, on launch day. On the eve of the platform’s launch, Google has confirmed 10 more games for Stadia, bringing the total number of games available on Nov. 19 to 22.
Those 10 new games were previously confirmed to arrive on Stadia before the end of 2019. But now titles like Final Fantasy 15, Metro Exodus, and NBA 2K20 will be available on day one. Google has also thrown in the new Samurai Shodown as part of a Stadia Pro subscription, alongside Destiny 2: The Collection.
Here’s the revised, 22-game launch lineup for Stadia (newly confirmed titles are marked with an asterisk):
- Assassin’s Creed Odyssey
- Attack on Titan 2: Final Battle*
- Destiny 2: The Collection
- Farming Simulator 2019*
- Final Fantasy 15*
- Football Manager 2020*
- Grid 2019*
- Gylt
- Just Dance 2020
- Kine
- Metro Exodus*
- Mortal Kombat 11
- NBA 2K20*
- Rage 2*
- Red Dead Redemption 2
- Rise of the Tomb Raider
- Samurai Shodown
- Shadow of the Tomb Raider: Definitive Edition
- Thumper
- Tomb Raider: Definitive Edition
- Trials Rising*
- Wolfenstein: Youngblood*
Google Stadia will launch on Nov. 19 in select territories.


/** * @file Job request functionality for connection to Volunteer Distributed Processing * @author Dominic Thwaites * @copyright (c) 2016 Dominic Thwaites<EMAIL_ADDRESS>* @licence MIT * @module VDPrequester */ module.exports=(/** @lends module:VDPrequester*/function() { /** * The maximum number of connections that can be made - set to 25. * Note that connections for completed jobs are re-used and thus new connections are only made as jobs are requested in parallel. * @type {number} * @const */ var MAX_CONNECTIONS=25; /** * Callback function template given when sending a job * * @callback requestCallback * @param {string} errorMessage Error message or null if no error * @param {(string|Blob|BufferArray)} resultData The data return from the job * @see VDPrequester#send */ /** * Class from which any and all cloud jobs are sent to a particular server. * * Note that connections to the server are only made upon job submission. Thus a bad server * address given here will not be immediately apparent. * * @param {string} address The URL complete with port number that is a VDP server (ws:// ...) * @throws {Error} if the address is not a websocket address * @constructor */ var VDPrequester=function(address) { if (typeof address=='string' && address.substr(0,5)=='ws://') { this.url = address; // server URL this.libraries = {}; // VDPrequester holds a set of connections per library name } else throw new Error('Invalid server address'); }; /** * @returns {number} The number of connections open to the VDP server (max 25) */ VDPrequester.prototype.connectionCount=function() { var count=0; for (var library in this.libraries) { count+=this.libraries[library].length; } return count; }; /** * Sends a new job into the cloud. * * Generally, this is a fire and forget operation. There is no telling how long the job will take or when and who * will run the job. If you don't care (unlikely) then you need not provide a callback. But a callback is recommended * as it can tell about failures as well as the data results of the job. * * The library must be a valid name taken from the VDP repository. * * @param {string} library Name of the execution library to invoke * @param {string | Blob | bufferArray} data Input data to the library function * @param {requestCallback} [callback] Function called on completion of the job (passing error and result data as a parameter) */ VDPrequester.prototype.send=function(library,data, callback) { if (typeof callback!='function') callback=function() {}; this._send(new Request(library,data, callback,this)); }; /** * Cancels all outstanding job requests and closes all server connections. * * This can be used to clean up connections. Requests that have yet to complete are 'forgotten' * and thus no response will ever come back. However, those jobs are not cancelled and may or may not * complete in the cloud. This request object continues to be operative, however, allowing new requests * (and thus new connections) to be made to the server. */ VDPrequester.prototype.disconnect=function() { for (var library in this.libraries) { var list=this.libraries[library].slice(); for (var i=0; i<list.length; i++) { list[i].available=true; list[i].close(); } } }; // Sends one request to the server over a spare connection or a new one if necessary VDPrequester.prototype._send=function(request) { if (!(request.library in this.libraries)) this.libraries[request.library]=[]; var list=this.libraries[request.library]; for (var i = 0; i < list.length; i++) { if (list[i].available) { request.resetSocket(list[i]).send(request.data); return; } } if (this.connectionCount()>=MAX_CONNECTIONS) { request.callback('Maximum connection count reached'); } try { list[i] = request.resetSocket(new WebSocket(this.url, 'R' + request.library)); list[i].onopen = function() { list[i].send(request.data); }; } catch (error) { request.callback('Connection to server refused'); } }; // Represents one job request var Request=function(library,data, callback,vdprequester) { this.library=library; this.data = data; this.vdprequester = vdprequester; this.callback = callback; this.errors=0; }; // Sets the socket's callbacks in the context of this request Request.prototype.resetSocket=function(socket) { socket.available=false; var me=this; socket.onclose=function() { var list=me.vdprequester.libraries[me.library]; // Remove this socket from our store list.splice(list.indexOf(socket),1); // Resend if we never got a response if (me.errors>0) { if (me.errors>12) me.callback('Server consistently unavailable'); else { setTimeout(function() { me.vdprequester._send(me); }, 5000); } } else { // Server purposefully closed this connection - meaning that // the message sent was not acceptable if (!socket.available) me.callback('Server closed your connection'); } }; socket.onmessage=function(event) { // flag as complete and send the data to the user socket.available = true; me.callback(null,event.data); }; socket.onerror=function() { me.errors++; }; return socket; }; return VDPrequester; })();


Class of Bond.
More...
List of all members.
Detailed Description
Users cannot create Bond object directly. Use StructureData.CreateBond() to create Bond
Member Function Documentation
| bool Bond::ExchangeAtoms |
( |
| ) |
|
Exchange the identities of atom 1 and atom 2 in the bond.
Member Data Documentation
Get the first atom of this bond
Atom1 is READONLY.
Get the second atom of this bond
Atom2 is READONLY.
The field CdxIdAsRead corresponds to the ID number of the atom in the CDX
or CDXML file that was read. This field is undefined if the structure was
not read from a CDX(ML) file, or if the structure has been changed since
it was read from the file.
The field CdxIdAsWrite corresponds to the ID number of the atom in the CDX
or CDXML file that was written. This field is undefined if the structure
was not written to a CDX(ML) file, or if the structure has been changed
since it was written to the file.
Get/Set the value of the graphical stereochemistry of the bond
Get GStereoName of the bond
GStereoName is READONLY.
Get the Length of the bond
Get the bond display name, for example C(1)-N(12)
Name is READONLY.
Get/Set the order of the bond
Order is READWRITE.
Get order name of the bond
OrderName is READONLY.
Get order symbol of the bond
OrderSymbol is READONLY.
Get reaction status.
Returned values explained as below:
None
Involved - Involved in reaction center, but not made/broken nor order changed.
MadeOrBroken - Made or broken
Changed - Order changed
NotInCenter - Not in reaction center
MadeBrokenOrChanged - Made or broken or changed
NotModified - Not modified
Unmapped - Not mapped
Check ReactionData::PerceiveReactionCenters() for example usage.
ReactionStatus is READONLY.
Check ReactionData::PerceiveReactionCenters() for example usage.


PivotLinkComponent
Description
Creates a pivot action link. Usually it's used together with chart components which allows the user to
analyze, with more detail, the chart results.
Options
- name
- The name of the component
- type
pivotLink
- htmlObject
- Id of the component (usually a div or a span tag)
- refreshPeriod
- Time in seconds for this component to refresh. Default is 0 (disabled)
- executeAtStart
- True to execute the component at start, false otherwise
- tooltip
- Tooltip to be displayed when mouse hovers
- content
- The value of the pivot action link
- pivotDefinition
- MetaLayer object with the definition of pivot (see MetaLayer options)
MetaLayer options
The options related to pivot action described in pentaho wiki.
- queryType
- Type of query to read results from. Can be sql or mdx. Default: mdx
- jndi
- Connection to use for the query
- query
- sql or mdx Query to execute
- cube
- Cube name to use when queryType is mdx
- catalog
- Mondrian schema to use when queryType is mdx
Sample


In City Press Voices: Why sex education is vital in our schools; SOE failures not about race; EFF women don’t need a bridge
Some of the opinions in your City Press Voices section this week:
SOE Failures: It’s not about race
Modidima Mannya asks: As we move on to address South Africa’s obvious troubles, we may have to consider what comes first. Do we want to be trapped in the race trap or do we want every single capable South African on board?
EFF women don’t need a bridg e
The EFF’s national communications manager Sixolise Gcilishe challenges party leader Julius Malema on the formation of a women’s command, saying if they did not create a special wing to lure men, it should not be done for women either.
ANC Youth League needs its Nasrec moment
The youth league will be rescued by young people who appreciate that the ANC has always been led by the most talented, educated and smart young leaders from its founding through its century of existence, says Yonela Diko.
Why is Thabo Zulu in hiding in a free South Africa?
If the state cannot protect whistle-blowers, we need to ask who is the state protecting, writes Omry Makgoale.
Why sex education is vital in our schools
Stanely Ncobela says that the more sexual education is injected at the appropriate stages of puberty, the lower the chance of adolescents suffering from consequences of uninformed, unwise and unhealthy sexual activities.


The SEC XBRL financial filing guessing game is over! You can do this for any concept, any axis.
Point... click... ship.
Compare or aggregate facts across filings, entities, periods, or sectors. Filter by any combination of explicit dimensions. Easily deal with amendments or duplicated information. Apply custom mappings of synonymous concepts. Use business rules to compute unreported facts or key ratios.
Example — Breakdown General Electric’s 2013 Assets by Business Segments.
Create reports the way you need them. Add aggregates, ratios, or external information. Create your own validation or verification rules. Compare across competitors or sectors.
Example — Compare the DOW30's latest filings using fundamental accounting concepts.
Perform truly interactive data analysis. Get answers to even the most sophisticated queries in seconds. Slice and dice, drill down, everything in real-time.
SECXBRL.info is a prototype repository built on top of 28.io. You can create your own XBRL-based information repository using the same approach, no programming required, just configure settings. You build your own XBRL taxonomy, submit XBRL instances, and you are in business in just a couple of hours. Or, if you need more flexibility, you can even modify existing application profiles to fit your needs or even create your own application profile.
Example — a regulator can specify that the IFRS taxonomy be used to submit information, specify a few configuration settings, and specify XBRL-based business rules. Your repository can be up and running in hours.
Using the 28.io information processing platform, XBRL can be stored in a way that is optimized for querying (NoLAP: NoSQL Analytical Processing). NoLAP extends the OLAP paradigm by removing hypercube rigidity and letting users generate their own hypercubes on the fly on the same pool of (fact) values.


--- layout: page weight: 0 title: Managing Marketing Email Unsubscribe List breadcrumbs: true navigation: show: true ---
This must-see video by Keanon shows you how to manage the list of people that unsubscribe from your Marketing Email. It is important to learn how they are unsubscribing from a specific list and not necessarily all future lists that you create or clone.


Chick Fil A Spicy Chicken Sandwich Recipe
Spicy Chicken Sandwich Recipe
I’m skipping today’s Week in Workouts post because to be honest, with all of the fun holiday happenings, working out was the last thing on my mind. I got a few runs in, and one run where I even tried to wear headphones, but I was reminded of why running with headphones sucks so I’d rather not talk about that.Instead, you get a recipe. Holla! And not exactly a healthy one but hey, life is short, live a little! Newflash, one unhealthy meal and a few skipped workouts aren’t going to magically turn you into a huge porker. Trust me on this. I'm going to get a bunch of guff from listing an unhealthy meal, so here's a link to a healthy supplement like agmatine to balance it out.
Anyway, what is this unhealthy meal I speak of? Well, we live within a short 5 minute drive from Chik Fil A, Panera, and Chipotle, which can be a blessing and curse at the same time.  Since I already recreated a Chipotle bowl and my favorite tuna sandwich from Panera, the spicy chicken sandwich and Chik Fil A sauce from Chik Fil A was the last order of business.
And let me tell you, this sandwich will NEVER be the last order of business in this house. It was my first time ever frying chicken and I am proud to say that both the sandwich and the sauce came out absolutely amazing, had my boys raving for more, and completely satisfied my cravings. Plus, now that I’ve got this sandwich down pat, if we happen to move somewhere far, far away from Chick Fil A, I won’t be too devastated.
As I mentioned earlier, it was my first time ever frying chicken so I wanted to make sure I did this correctly. I combined recipes from Serious Eats, Table for Two, and this blog and I honestly believe I came up with the perfect adaptation of the three. And because I found it somewhat of a pain switching back and forth between each recipe, I decided to make things easier for you and provide a step by step breakdown – Pioneer Woman Style. Your welcome 😉
So here’s what you need for the breading:
2 cups flour
1/3 cup powdered sugar (YES)
3 tsp paprika
2 tbs black pepper
2 tsp cayenne pepper ( I like my eyes to water so you can add less if you don’t)
1 tsp chili powder
1 tsp salt
1 tsp baking powder
Here’s everything else you need for the chicken:
2 large chicken breasts or 6 small tenders, beaten till tender
1/2 cup pickle juice mixed with 1/2 cup water
1 cup milk
2 eggs
Peanut Oil for frying
Dill pickle slices for the sandwich
And here’s what you need for the delicious Chick Fil A sauce:
1/2 cup mayo
3 tsp yellow mustard
3 tsp honey
1 tsp dijon honey mustard
1/2 tsp garlic powder
1/2 tsp paprika
1 tsp of lemon juice
1 tsp of bbq sauce
So now that you have all your ingredients together, the first thing you want to do is mix 1/2 cup pickle juice and 1/2 cup of water. Then, let your chicken brine in the solution for 30 minutes while you assemble the rest of your ingredients and make the faux Chik Fil A sauce.
Next, mix the flour, paprika, cayenne pepper, chili powder, garlic powder, pepper, salt, powdered sugar and baking soda together.
Then, make your coating mixture by mixing the cup of milk, two eggs and a splash of pickle juice.
While the chicken is still brining, you can also make the Chick Fil A sauce. Mix the mustard, dijon honey mustard, honey, paprika, bbq sauce, garlic powder, lemon juice, and mayo together and stir until evenly mixed. Set aside.
After you have everything set up, you can then move on to the buns. Lightly butter the tops and insides of the buns, and then toast on your lowest setting. Once the buns have toasted, add even MORE butter to the top and insides.
If we’re trying to get that authentic greasy sandwich taste here, the more butter the better 😉
Once you’ve finished toasting and buttering your buns, (does this not crack anyone else up?!) heat a large frying pan filled with 3 cups of peanut oil. Try to get your oil temperature to around 350 degrees.
Add a little bit of the milk and egg mix to the flour and mix everything up till the flour mixture gets crumbly. I promise this makes the breading on the chicken even more crispy, thick and out of this world delicious.
It’s also how the professionals do it so of course, it’s how you should do it too 😉
Finally, it’s time to FRY! Hallelujah!
Working in an assembly line, remove one tender from the pickle juice brine mix, then dunk into the egg mixture before coating the tender with the crumbly breading.
  It really doesn’t take that long to do and the results are totally worth the extra work.
And in this case it’s perfectly okay to double dip so have at it – no slapped hands here! Dip the tender back in the egg, then back into the flour and finally, carefully place the tender in the oil.
Fry the tender on each side for 4 minutes or until golden brown. If you’re worried about the inside of the tender not being cooked enough, you can warm the tenders in the oven for a few minutes while you get the table set up or clean up your oily mess 😉
There you have it! A perfectly crispy and perfectly spicy chicken filet sandwiched between a rich buttered bun and two sweet and sour pickles, just like the real thing but almost better because it was made with love and without MSG.
And because of the pickle juice and water brine, the chicken retains it’s moisture and stays incredibly juicy, even with the deep frying.
As for the Chik Fil A sauce, the hunk suggested I make a whole jar of it and keep it in the fridge so we can put it on “everything”. The sauce was that ridiculously good and I dare say that it even rivals the real thing.
Hey, don’t shoot the messenger. Just try it and tell me what you think. I hope you all love it as much as we did, because you’ll definitely be seeing a lot more of these babies on this blog. I want it in my face FOREVER AND EVER AND EVERRRR…
And finally, for my local peeps: If you want to start your new years off right, Hot Asana Yoga Studio & Boutique is hosting a Hot Gratitude Yoga Glow Flow this Saturday! There will be glowing balloons, black lights, and killer music! Sounds like TONS of fun, right? I’ll be there and hope to see some of you there as well!
Have a happy, healthy (not if you make this sandwich) weekend!
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|
Setup Stages
Setup allows you to configure core settings for this DNAS server to get you broadcasting quickly.To create a more complex system configuration (including Transcoder setup if applicable), please consult the documentation or make use of the Configuration Builder (if installed). Stage 1 - Core Settings |
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Experience the tradegy of war through the eyes of Matt.
Kill some time in these minigames.
Checkout the best players.
See the D4NK people behind BYGONE.
Puzzle Game Free Mode Now avaliable
Chapter 2 Now avaliable


A coordinate system , where is the usual cylindrical toroidal angle, is called a magnetic surface coordinate system if is a function of only , i.e., (we also have since we are considering axially symmetrical case). In terms of coordinates, the contravariant form of the magnetic field, Eq. (172), is written as


Debbie Joseph - Tax Medical Benefits question
Jun 6
Franz Henry - Virtual Filing issues
Robert Manchester - Small Business filing
Jun 7


A kid playing with his Legos, that's how I feel.
I'm Jason and I've got a passion for creating. I enjoy the process as much as I do the final product*. I believe in iteration and communication. I'm self-taught and never stop learning. My goal is to meet awesome people, create excellent things, and continue growing.
*Even though a project is never truly finished.I design aesthetically pleasing, readable, browsable, and responsive content. I like to use an iterative process, I start fantastical and then strip the design down to only the optimal.
I build accessible interactive content that solves problems. I keep code semantic and optimized by following best practices.
I strive to create a better relationship between humans and technology by creating an intuitive experience. My goal is not to dazzle or force the user but allow the user to follow their own flow.
Thanks for stopping by! Why don't you check out my portfolio?


by Jamie » Wed May 24, 2006 9:24 pm
I can imagine, but now your mention of salmon is making me crave crackers, cream cheese, capers and smoked salmon. In that order, all on the cracker. Salmon is yummy. Salmonella not so much.
There are 10 kinds of people: those who understand binary and those who don't.
"The laws of science be a harsh mistress."


{% extends 'layouts/base.html' %} {% block title %}Call for Proposals - {{ super() }}{% endblock %} {% block content %}
The Call for Proposals ends on {{ current_event.proposals_end.strftime('%A, %B %d, %Y') }} {{ current_event.proposals_end|time_zone }}. Make sure you submit your talks before then.
{{ current_event }}, New York City's annual Python conference, will take place from {{ current_event.begins.strftime('%A, %B %d') }} through {{ current_event.ends.strftime('%A, %B %d, %Y') }} New York, NY.
Anyone interested in speaking is encouraged to submit a proposal for talks and tutorials. There are no restrictions on topics, but we recommend they be of interest to Pythonistas. Talks will fill slots of 25 minutes and 55 minutes, including time for questions and answers.
Everyone is encouraged to submit a proposal. We are looking for speakers of all different speaking and Python experience levels, from first-timers to experienced veterans.
The audience's experience level will be just as diverse, so feel free to cater your talk to a specific experience level.
One of the best ways to come up with an idea is to think about something you want to learn about. It's a great way to learn about the topic and you'll be able to share your experiences with the audience.
Another great source of topics is challenges you've recently overcome. Have you recently ported a library from Python 2 to 3? Perhaps you've recently helped your application scale to a greater number of users. Or maybe you recently learned how to use a library to simplify your data analysis. Experiences like these are usually full of great tips and tricks to share.
Still looking for ideas? Here are some topics from recent NYC Python and Flask-NYC events:


Jesse Wolgamott has launched a training course called Ruby Off Rails, which is geared toward helping existing programmers learn Ruby first, and not Rails.
I heartily endorse this and highly recommend this approach if you want to “get into Rails”.
When I first heard about Rails, I bought a copy of Agile Web Development with Rails and was instantly confused as to what I was looking at. What were all those @
signs for? Why are there pipes after the do
keyword? Where were all these methods coming from?
The answer was: Learn you a Ruby.
I am not the type programmer to just copy/paste code I don’t understand. I don’t like “magic1”. I want to know, or at least have an inkling of, how the tools I’m using work. And there’s no hope in understanding Rails without understanding Ruby.
I sold the book, and, using a Ruby book available on Safari, started to learn Ruby the language. I ignored Rails, and didn’t even think about it. Instead, all of the command line apps that I would historically write in Perl, I wrote in Ruby. I wrote a lot of Perl in Ruby at first2.
Eventually, I figured out how the language worked and, when it came time to do some serious Rails programming, I wasn’t surprised by much. I mostly just had to learn to navigate the documentation. Even when I didn’t know how something worked, I could usually have a guess, and I was usually right. When I wasn’t, I learned something new about Ruby.
It probably wouldn’t have taken so long if I’d taken a more focused approach like what Ruby Off Rails is doing (and, LivingSocial’s Hungry Academy as well, which starts with just Ruby before moving to Rails).
If you’re tired of slinging Java/C#/PHP, but can’t seem to get focused to learn Rails or Ruby, Ruby Off Rails seems like a good way to go. It’s not very expensive, and it’s geared around writing code, not learning API documentation.


Allow KAROKEO to save user information such as Name, phonenumber and date of birth.
Allow KAROKEO to gather and save information about my music preferences and use of KAROKEO.
Allow friends to view my personal information and music preferences.
Allow users on KAROKEO to view my personal information.
Allow users on KAROKEO to view my music preferences.
Allow my personal information to be shared with third party companies.
>Allow my song and artist preferences to be shared with third party companies.


Battle the daily struggle of time.
Your equipment: a goat and some drinks.
Meet Marvin, a local farmboy in the Highlands, a far-off village where time is just an illusion. This makes the daily ride to school a difficult task. But you can help! Since bikes or cars are not agile enough to weather the outstanding landscapes Marvin has to travel to, you will be traveling by... goat!
The road is full of obstacles you need to jump over! Progress and unlock new worlds as your highscore grows. Eventually you'll get at school. And then you'll understand or recognize that for some people (like Marvin), getting there is a real challenge!
 Very nifty app, extremely addicting too. My advice: just download this sh*t!
Bora Fidan
Great game! It is a game that has more depth than you might think. Many people may expect another simple jumping-over-objects game, but that's not completely true! With this game you help Marvin arriving at school in time, so he doesn't fall behind in class. Because of that, Marvin won't become a douche-bag and doesn't need a dividend from our tax. So that's why I rate this 5/5 stars, 'cause with this game we help the future, G!
Woutrsz z
gr8 m8 i r8 8/8
Jan Müller
Toll Toller
4,6/5


Guest post by Alister Scott
I’ve recently been putting some amount of thought into how to write good Cucumber features. One the reasons I love Cucumber so much is its language focus; meaning it makes you think about things like sentence function more than other testing frameworks I have used. One element of sentence function usage in Cucumber that’s important is whether you should write imperative (communicative) or declarative (informative) sentences for your steps. I’ll provide a couple of examples to show the differences.
An imperative (communicative) Cucumber scenario
Scenario: Submit the form with correct data (imperative) Given I am on the watir example form When I set "What is your name?" to "Alister" And I set "What is your story?" to "I like ruby" And I set "What testing tool do you like?" to "Watir" And I click "Submit" Then I should see the message "Thanks! Your response has been recorded."
Each step is a command, or instruction, so it’s pretty clear what is being done.
A declarative (informative) Cucumber scenario
Scenario: Submit the form with correct data (declarative) Given I am on the watir example form When I submit the form with correct data Then I should see the correct message
Each step states an idea, so sometimes it’s not really clear precisely what is being done.
Imperative vs Declarative
There’s some quite good articles about writing Cucumber features/scenarios around. One such article that stood out to me was written in May 2008 about RSpec Story Runner, and whether you should use an imperative or declarative style. The answer is, of course, it depends, but most people tend to lean towards the declarative style, just the way that a lot of programmers prefer declarative programming. I am actually swinging towards imperative style cucumber features and steps; the reasons for which I will explain below.
Running Imperative Features gives you richer output
With the two examples above, I have kinda cheated, in that the step definitions for the declarative style calls imperative steps. For example, this is the declarative step defintion:
When /^I submit the form with correct data$/ do When "I set \"What is your name?\" to \"Alister\"" And "I set \"What is your story?\" to \"I like ruby\"" And "I set \"What testing tool do you like?\" to \"Watir\"" And "I click \"Submit\"" end
This is all well and good, as you can now have multiple cucumber steps that call the same thing, it’s DRYish, but the problem is when you run the step “When I submit the form with correct data”, that’s all you get.
Compare this to the imperative step results, which whilst calling exactly the same code, give you a lot more richness.
Writing imperative scenarios allow you to utilise things advanced cucumber functionality
Two table based Cucumber features I like using are scenario outlines, and multiline step arguments, but these don’t make a lot of sense if you’re using a declarative style. For example, the imperative scenario could be easily adapted to use a scenario outline, whereas the declarative style would mean writing more declarative steps.
Scenario Outline: Submit the form with correct data (imperative - outline) Given I am on the watir example form When I set "What is your name?" to "" And I set "What is your story?" to "" And I set "What testing tool do you like?" to "" And I click "Submit" Then I should see the message "Thanks! Your response has been recorded."
Examples:
| name | story | tool |
| Alister | I Like ruby | Watir |
| Mozart | I like java | Selenium |
Writing declarative scenarios often means hidden detail
As you move to more and more declarative scenarios, more and more details become hidden in cucumber step definitions and library code. As Rasmus pointed out on Jared Quinert’s blog on does Cucumber suck:
...tests end up looking like the one test to rule them all™: Given everything is set up When I submit correct data Then everything should be OK
Summary
To wrap up, I’m not saying don’t go declarative, what I am saying is that you lose certain things in Cucumber when you do, but whether this is a big deal or not depends on what you’re trying to get out of it. In the meantime, I’ll continue to experiment and see what works and what doesn’t.
Original article: http://watirmelon.com/2010/12/10/cucumber-imperative-or-declarative-that-is-the-question/


[§523A-29] Rules. The administrator may adopt, pursuant to chapter 91, rules necessary to carry out this part. [L 2008, c 55, pt of §1]


Customer Health Scorecard
Use machine learning to make recommendations on how to improve customer health.
 If you cant plug the holes, your water bucket is not going to fill up.
Algorithm
Machine learning (Deep Learning with an Artificial Neural Network) is a highly accurate solution that enables customer health evaluation before customers leave.
Solution
The Customer Scorecard is a way to communicate the Deep Learning model in a way that decision makers can easily digest. The end result is that insights can be worked into decision making process.
Disclaimer: This is a suggested strategy that needs to be tailored to the needs of each organization.
View full screen for best experience.


Kicking ass one sprint at a time!
| Team | Devs | Product Owner | Scrum Master |
|---|---|---|---|
| Includes Dev, QE, PM, PMO | The people that make the user story a reality. This includes QE. | Person responsible for the direction of the product | Facilitator of the process |
| Owns backlog priority | Information radiator | ||
| Usually responsible for writing user stories |
| Product owner is not always a single person |
|---|
| A User Story Owner isn’t necessarily a Product person. An Engineer might be the one to represent a user story during grooming. An example of this might be a story created by Eng for paying down some technical debt. |
| Scrum Master may not always be a PMO |
|---|
| Being a geographically dispersed team, it may not always be possible to have PMO act as SM. Another person may fill the role and work closely with PMO in those cases. |
| Devs are versatile |
|---|
| Devs may need to do activity that isn’t coding such as work on requirements or docs. That’s OK and can still have stories for the sprints. |
| Apart but together |
|---|
| Agile was built around co-location. A high level of communication and togetherness are keys to success. Use tools as much as possible to better communicate and foster a sense of teamwork. The daily stand-up is great for togetherness. Email as a last option. |
| Sprint Planning |
|---|
|
| Daily Stand-up |
|---|
|
| Backlog Refinement |
|---|
|
| Backlog Grooming |
|---|
|
| Retrospective |
|---|
|
| Goal | Agree on work to be completed during the sprint and create a plan to achieve the goal by creating tasks that will meet the acceptance criteria for each story in the sprint. |
|---|---|
| Method | Team chooses which stories they will commit to for the sprint by selecting from the top of the product backlog. Ideally stories are broken down into tasks and sized in hours. Tasking and sizing allows the team to gut-check the amount of work they took on from the product backlog. |
| Artifact | The team should produce a sprint goal and a sprint backlog by the end of sprint planning. |
| Goal | By focusing on what each person accomplished yesterday and will accomplish today, the team gains an excellent understanding of what work has been done and what work remains. The daily scrum meeting is not a status update meeting in which a boss is collecting information about who is behind schedule. Rather, it is a meeting in which team members make commitments to each other. |
|---|---|
| Method |
Devs answer to each other the following three questions:
|
| Artifact | Clear understanding of the work for the day by the team. |
| Goal | User story rank is set by Product. Stories at the top of the backlog are ready to be groomed by the team by having a good title, description and acceptance criteria. |
|---|---|
| Method | Product reviews new stories and defects and ranks them in the product backlog. They edit stories for clarity and create new stories as needed. |
| Artifact | Product backlog is ready for grooming. |
| Goal | Review product backlog items and have a meeting of the minds between Product Owner and team. Update stories as needed. Stories are sized. |
|---|---|
| Method | Scrum Master steps through unsized stories starting with the highest ranked item in the product backlog. Team reviews and sizes story. |
| Artifact | Stories are sized using story points. |
| Goal | Reflect on the sprint to allow the team to inspect and adapt. |
|---|---|
| Method |
Retrospectives are facilitated by the Scrum Master and can vary based on the
personal style of the Scrum Master. The following items are usually touched on
during the retro:
|
| Artifact | Happy, healthy, high-performing team. |
| What is a sprint demo? |
|---|
|
Each team should end the sprint with a demonstration of the working software
they produced in the sprint. This is a meeting driven by the team themselves
and should last less than an hour. It is an informal, festive occasion to celebrate
the great work that the team did. Only fully finished stories that meet all of the
acceptance criteria should be shown at the demo.
|
| What a sprint demo is not |
|---|
|
This is not a meeting for the Product Owner to accept the story (this will have
already occurred during the sprint). It also isn’t a debate about the merit of a
story. Feedback is always welcome but best
handled offline with the Product Owner where a follow-on story can be created
for future sprints.
|
| Challenges |
|---|
| This is a meeting that is most impactful if the majority of participants are there in-person. Having distributed teams and/or audiences makes having a great demo more challenging but is still worth having in most cases. It should be a team decision on whether-or-not to have a public demo but it is highly encouraged. |
| Goal | Agree on work to be completed during the sprint and create a plan to achieve the goal by creating tasks that will meet the acceptance criteria for each story in the sprint |
|---|---|
| Team | Planning for the sprint by reviewing backlog, sizing and tasking |
| Devs |
|
| Product Owner | Meeting with the team as requested and needed by the team |
| Scrum Master |
|
| Goal | Begin Development |
|---|---|
| Team | Daily Standup |
| Devs | Coding, creating test cases and design |
| Product Owner | Re-rank backlog after changes made during planning |
| Scrum Master | Review sprint plan in tool to ensure it reflects the team's intent |
| Goal | Continue development |
|---|---|
| Team | Daily stand-up |
| Devs | Coding, testing and design |
| Product Owner | Prepare for backlog grooming session by ranking stories and making sure stories are clear and ready for sizing by the team |
| Scrum Master | Work with Product Owner to prepare for backlog grooming session |
| Goal | Continue development and groom backlog |
|---|---|
| Team | Daily stand-up |
| Devs |
|
| Product Owner | Backlog grooming session |
| Scrum Master | Facilitate backlog grooming session |
| Goal | Continue development |
|---|---|
| Team | Daily stand-up |
| Devs | Coding, testing and design |
| Product Owner | Accept completed stories |
| Scrum Master | Review stories in backlog |
| Goal | Rest |
|---|---|
| Team | Enjoy the weekend! |
| Devs | Eat |
| Product Owner | Sleep |
| Scrum Master | Be Merry |
| Goal | Continue development |
|---|---|
| Team | Daily stand-up |
| Devs | Coding, testing and design |
| Product Owner | Prepare for backlog grooming session |
| Scrum Master | Work with Product Owner to prepare for backlog grooming session |
| Goal | Continue development and groom backlog |
|---|---|
| Team | Daily stand-up |
| Devs |
|
| Product Owner | Backlog grooming session |
| Scrum Master | Facilitate backlog grooming session |
| Goal | Continue development |
|---|---|
| Team | Daily stand-up |
| Devs | Coding, testing and design |
| Product Owner | Accept completed stories |
| Scrum Master |
|
| Goal | Code freeze |
|---|---|
| Team | Daily tand-up |
| Devs |
|
| Product Owner | Accept completed stories |
| Scrum Master |
|
| Goal | Rest and reflect |
|---|---|
| Team |
|
| Devs |
|
| Product Owner | Accept completed stories |
| Scrum Master |
|
| Goal | Rest |
|---|---|
| Team | Enjoy the weekend! |
| Devs | Eat |
| Product Owner | Sleep |
| Scrum Master | Be Merry |


An abstract base class for detail views controlled by a selection view like a Tree, TreeTable, List, a search mask implementation etc. . The behaviour can be controlled efficiently by a state machine for detail views.
The structure of the behavior model is implemented by states and transitions. The actual behaviour is realised by actions (-> abstract methods) attached to transitions and entry of states. These methods form a template structure to be filled by all implementing classes.
There are two slightly different types of detail views:
The behaviour model assumes that the selection cannot change during edit or create, so the selection component (Tree, List etc.) should be disabled during edit or create. Drawn as a state chart, the behaviour model looks like this:
SUBVIEW TOPVIEW O O | | /init/ /init/ | | +---v---+ +-----v-----+ | INIT |---root--->| EMPTY |<-+ +-v-----+ +|-^-v--^-v-+ root | | | | | | | | +-----select----+ | | | +----+ select | +------root----+ | | | | | | | +----+ | | | create cancel select| | | | | | | +-v--v--v--^--+ +-----v--^----+ +-<| SHOW |<-save-| CREATEEMPTY | +v--^--^--v---+ +-------------+ | | | | | | +--|-------------+ | +--|--|----------+ | | | | +-------+ | | | | cancel | | cancel create | | edit | | |save | |save | +-v--^--^-+ +-v--^--^-+ | CREATE | | EDIT | +---------+ +---------+
| Modifiers | Name | Description |
|---|---|---|
protected StateMachine<DVState, DVEvent> |
sm |
| Type Params | Return Type | Name and description |
|---|---|---|
|
protected void |
clearFields() clear all editable fields |
|
protected void |
createemptymode() prepare for editing in CREATEEMPTY state |
|
protected void |
createmode() prepare for editing in CREATE state |
|
protected void |
editmode() prepare for editing in EDIT state |
|
protected void |
emptymode() prepare EMPTY state |
|
void |
execute(DVEvent event, java.lang.Object... params) |
|
void |
initItem(java.lang.Long itemId) Initialize all fields for a new item to display or edit. |
|
void |
initSm(DVState initState) initialize the state machine with |
|
protected void |
initmode() prepare INIT state |
|
protected void |
onCreateCancel() leaving DIALOG state with cancel |
|
protected void |
onCreateSave() leaving CREATE or CREATEEMPTY state with save saving created item to persistent storage, typically by calling an appropriate service. |
|
protected void |
onEditCancel() leaving EDIT state with cancel, so reset all fields from the current full dto object |
|
protected void |
onEditDone(boolean mustReload = true) When editing an item was finished [Save] or cancelled [Cancel], notify the selector component to enable it and eventually update the items changed caption |
|
protected void |
onEditSave() leaving EDIT state with save, saving current item after editing to persistent storage, typically by calling an appropriate service. |
|
protected void |
showmode() prepare SHOW state |
| Methods inherited from class | Name |
|---|---|
class java.lang.Object |
java.lang.Object#wait(), java.lang.Object#wait(long, int), java.lang.Object#wait(long), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll() |
clear all editable fields
prepare for editing in CREATEEMPTY state
prepare for editing in CREATE state
prepare for editing in EDIT state
prepare EMPTY state
Initialize all fields for a new item to display or edit. Given is its id, so its full dto can be addressed and requested by an appropriate service. This method is usually called by the selector component.
itemId
- unique identifying keyinitialize the state machine with
prepare INIT state
leaving DIALOG state with cancel
leaving CREATE or CREATEEMPTY state with save saving created item to persistent storage, typically by calling an appropriate service.
leaving EDIT state with cancel, so reset all fields from the current full dto object
When editing an item was finished [Save] or cancelled [Cancel], notify the selector component to enable it and eventually update the items changed caption
itemId
- identifies edited itemcaption
- eventually updated caption of the edited itemmustReload
- Component must reload after new item was created
or (tree-) structure changedleaving EDIT state with save, saving current item after editing to persistent storage, typically by calling an appropriate service.
prepare SHOW state


Return Value
An observable sequence that contains the result of resultSelector
being called with an unretained reference on obj
and the values of the original sequence.
func withUnretained<Object, Out>(_ obj: Object, resultSelector: @escaping (Object, Self.Element) -> Out) -> Observable<Out> where Object : AnyObject
An observable sequence that contains the result of resultSelector
being called with an unretained reference on obj
and the values of the original sequence.
obj
The object to provide an unretained reference on.
resultSelector
A function to combine the unretained referenced on obj
and the value of the observable sequence.
In the case the provided object cannot be retained successfully, the seqeunce will complete.


My principal scientifc interest is in the study of coronal mass ejections (solar storms) and their interaction with Earth for the purposes of space weather studies. I work extensively with the STEREO mission to drive new understandings into the evolutionary effects of CMEs.
I am recently focusing more towards the Research to Operations (R2O) segments of space weather forecasting and am developing further a new tool to predict the Bz inside CMEs (i.e., forecasting the magnetic vectors). I do this through contracts with UMBC and collaborating closely with collegues at JHU/APL.
Solar storms start their lives as violent explosions from the sun’s surface. They’re made up of energetic charged particles wrapped in a complex magnetic cloud... Read More
Written by Dr. Neel Savani
We currently have a maximum of about 60 minutes to prepare for tech disruptions on Earth due to coronal mass ejections from the sun, but an improved forecasting system could lengthen that lead time by hours. Maria Temming reports Listen to the 60 second science
Produced by Maria Temming
First Class Hons
4 * A’s @ A-Levels: Physics; Chemistry; Maths; F. Maths


Case Class Extraction
The value extraction performed by Directives is a nice way of providing your route logic with interesting request properties, all with proper type-safety and error handling. However, in some case you might want even more. Consider this example:
case class Color(red: Int, green: Int, blue: Int)
val route =
path("color") {
parameters('red.as[Int], 'green.as[Int], 'blue.as[Int]) { (red, green, blue) =>
val color = Color(red, green, blue)
// ... route working with the `color` instance
}
}
Here the parameters directives is employed to extract three Int values, which are then used to construct an instance of the Color case class. So far so good. However, if the model classes we'd like to work with have more than just a few parameters the overhead introduced by capturing the arguments as extractions only to feed them into the model class constructor directly afterwards can somewhat clutter up your route definitions.
If your model classes are case classes, as in our example, Akka HTTP supports an even shorter and more concise syntax. You can also write the example above like this:
case class Color(red: Int, green: Int, blue: Int)
val route =
path("color") {
parameters('red.as[Int], 'green.as[Int], 'blue.as[Int]).as(Color) { color =>
// ... route working with the `color` instance
}
}
You can postfix any directive with extractions with an as(...) call. By simply passing the companion object of your model case class to the as modifier method the underlying directive is transformed into an equivalent one, which extracts only one value of the type of your model class. Note that there is no reflection involved and your case class does not have to implement any special interfaces. The only requirement is that the directive you attach the as call to produces the right number of extractions, with the right types and in the right order.
If you'd like to construct a case class instance from extractions produced by several directives you can first join the directives with the & operator before using the as call:
case class Color(name: String, red: Int, green: Int, blue: Int)
val route =
(path("color" / Segment) & parameters('r.as[Int], 'g.as[Int], 'b.as[Int]))
.as(Color) { color =>
// ... route working with the `color` instance
}
Here the Color class has gotten another member, name, which is supplied not as a parameter but as a path element. By joining the path and parameters directives with & you create a directive extracting 4 values, which directly fit the member list of the Color case class. Therefore you can use the as modifier to convert the directive into one extracting only a single Color instance.
Generally, when you have routes that work with, say, more than 3 extractions it's a good idea to introduce a case class for these and resort to case class extraction. Especially since it supports another nice feature: validation.
Caution
There is one quirk to look out for when using case class extraction: If you create an explicit companion object for your case class, no matter whether you actually add any members to it or not, the syntax presented above will not (quite) work anymore. Instead of as(Color) you will then have to say as(Color.apply). This behavior appears as if it's not really intended, so this might be improved in future Scala versions.
Case Class Validation
In many cases your web service needs to verify input parameters according to some logic before actually working with them. E.g. in the example above the restriction might be that all color component values must be between 0 and 255. You could get this done with a few validate directives but this would quickly become cumbersome and hard to read.
If you use case class extraction you can put the verification logic into the constructor of your case class, where it should be:
case class Color(name: String, red: Int, green: Int, blue: Int) {
require(!name.isEmpty, "color name must not be empty")
require(0 <= red && red <= 255, "red color component must be between 0 and 255")
require(0 <= green && green <= 255, "green color component must be between 0 and 255")
require(0 <= blue && blue <= 255, "blue color component must be between 0 and 255")
}
If you write your validations like this Akka HTTP's case class extraction logic will properly pick up all error messages and generate a ValidationRejection if something goes wrong. By default, ValidationRejections are converted into 400 Bad Request error response by the default RejectionHandler, if no subsequent route successfully handles the request.
Contents


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Your replies will help us improve the payment service.


data structures
Contents
2.2. data structures#
Some notes on advanced data structures, based on UVA’s “Program and Data Representation” course.
2.2.1. lists#
<IP_ADDRESS>. arrays and strings#
start by checking for null, length 0
ascii is 128, extended is 256
<IP_ADDRESS>. queue - linkedlist#
has insert at back (enqueue) and remove from front (dequeue)
class Node {
Node next;
int val;
public Node(int d) { val = d; }
}
finding a loop is tricky, use visited
reverse a linked list
requires 3 ptrs (one temporary to store next)
return pointer to new end
<IP_ADDRESS>. stack#
class Stack {
Node top;
Node pop() {
if (top != null) {
Object item = top.data;
top = top.next;
return item;
}
return null;
}
void push(Object item) {
Node t = new Node(item);
t.next = top;
top = t;
}
}
sort a stack with 2 stacks
make a new stack called ans
pop from old
while old element is > ans.peek(), old.push(ans.pop())
then new.push(old element)
stack with min - each el stores min of things below it
queue with 2 stacks - keep popping everything off of one and putting them on the other
sort with 2 stacks
2.2.2. trees#
Balanced binary trees are generally logarithmic
Root: a node with no parent; there can only be one root
Leaf: a node with no children
Siblings: two nodes with the same parent
Height of a node: length of the longest path from that node to a leaf
Thus, all leaves have height of zero
Height of a tree: maximum depth of a node in that tree = height of the root
Depth of a node: length of the path from the root to that node
Path: sequence of nodes n1, n2, …, nk such that ni is parent of ni+1 for 1 ≤ i ≤ k
Length: number of edges in the path
Internal path length: sum of the depths of all the nodes
Binary Tree - every node has at most 2 children
Binary Search Tree - Each node has a key value that can be compared
Every node in left subtree has a key whose value is less than the root’s key value
Every node in right subtree has a key whose value is greater than the root’s key value
void BST::insert(int x, BinaryNode * & curNode){ //we pass in by reference because we want a change in the method to actually modify the parameter (the parameter is the curNode *)
//left associative so this is a reference to a pointer
if (curNode==NULL)
curNode = new BinaryNode(x,NULL,NULL);
else if(x<curNode->element)
insert(x,curNode->left);
else if(x>curNode->element)
insert(x,curNode->right);
}
BST Remove
if no children: remove node (reclaiming memory), set parent pointer to null - one child: Adjust pointer of parent to point at child, and reclaim memory - two children: successor is min of right subtree - replace node with successor, then remove successor from tree
worst-case depth = n-1 (this happens when the data is already sorted)
maximum number of nodes in tree of height h is 2^(h+1) - 1
minimum height h ≥ log(n+1)-1
Perfect Binary tree - impractical because you need the perfect amount of nodes
all leaves have the same depth
number of leaves 2^h
<IP_ADDRESS>. AVL Tree#
For every node in the tree, the height of the left and right sub-trees differs at most by 1
guarantees log(n)
balance factor := The height of the right subtree minus the height of the left subtree
“Unbalanced” trees: A balance factor of -2 or 2
AVL Insert - needs to update balance factors
same sign -> single rotation
-2, -1 -> needs right rotation
-2, +1 -> needs left then right
Find: Θ(log n) time: height of tree is always Θ(log n)
Insert: Θ(log n) time: find() takes Θ(log n), then may have to visit every node on the path back up to root to perform up to 2 single rotations
Remove: Θ(log n): left as an exercise
Print: Θ(n): no matter the data structure, it will still take n steps to print n elements
<IP_ADDRESS>. Red-Black Trees#
definition
A node is either red or black
The root is black
All leaves are black The leaves may be the NULL children
Both children of every red node are black Therefore, a black node is the only possible parent for a red node
Every simple path from a node to any descendant leaf contains the same number of black nodes
properties
The height of the right and left subtree can differ by a factor of n
insert (Assume node is red and try to insert)
The new node is the root node
The new node’s parent is black
Both the parent and uncle (aunt?) are red
Parent is red, uncle is black, new node is the right child of parent
Parent is red, uncle is black, new node is the left child of parent
Removal
Do a normal BST remove
Find next highest/lowest value, put it’s value in the node to be deleted, remove that highest/lowest node
Note that that node won’t have 2 children!
We replace the node to be deleted with it’s left child
This child is N, it’s sibling is S, it’s parent is P
<IP_ADDRESS>. Splay Trees#
A self-balancing tree that keeps “recently” used nodes close to the top
This improves performance in some cases
Great for caches
Not good for uniform access
Anytime you find / insert / delete a node, you splay the tree around that node
Perform tree rotations to make that node the new root node
Splaying is Θ(h) where h is the height of the tree
At worst this is linear time - Θ(n)
We say it runs in Θ(log n) amortized time - individual operations might take linear time, but other operations take almost constant time - averages out to logarithmic time
m operations will take m*log(n) time
<IP_ADDRESS>. other trees#
to go through bst (without recursion) in order, use stacks
push and go left
if can’t go left, pop
add new left nodes
go right
breadth-first tree
recursively print only at a particular level each time
create pointers to nodes on the right
balanced tree = any 2 nodes differ in height by more than 1
(maxDepth - minDepth) <=1
trie is an infix of the word “retrieval” because the trie can find a single word in a dictionary with only a prefix of the word
root is empty string
each node stores a character in the word
if ends, full word
need a way to tell if prefix is a word -> each node stores a boolean isWord
2.2.3. heaps#
used for priority queue
peek(): just look at the root node
add(val): put it at correct spot, percolate up
percolate - Repeatedly exchange node with its parent if needed
expected run time: ∑i=1..n 1/2^n∗n=2
pop(): put last leaf at root, percolate down
Remove root (that is always the min!)
Put “last” leaf node at root
Repeatedly find smallest child and swap node with smallest child if needed.
Priority Queue - Binary Heap is always used for Priority Queue
insert
inserts with a priority
findMin
finds the minimum element
deleteMin
finds, returns, and removes minimum element
perfect (or complete) binary tree - binary tree with all leaf nodes at the same depth; all internal nodes have 2 children.
height h, 2h+1-1 nodes, 2h-1 non-leaves, and 2h leaves
Full Binary Tree
A binary tree in which each node has exactly zero or two children.
Min-heap - parent is min
Heap Structure Property: A binary heap is an almost complete binary tree, which is a binary tree that is completely filled, with the possible exception of the bottom level, which is filled left to right.
in an array - this is faster than pointers
left child: 2*i
right child: (2*i)+1
parent: floor(i/2)
pointers need more space, are slower
multiplying, dividing by 2 are very fast
Heap ordering property: For every non-root node X, the key in the parent of X is less than (or equal to) the key in X. Thus, the tree is partially ordered.
Heap operations
findMin: just look at the root node
insert(val): put it at correct spot, percolate up
percolate - Repeatedly exchange node with its parent if needed
expecteed run time: ∑i=1..n 1/2^n∗n=2
deleteMin: put last leaf at root, percolate down
Remove root (that is always the min!)
Put “last” leaf node at root
Repeatedly find smallest child and swap node with smallest child if needed.
Compression
Lossless compression: X = X’
Lossy compression: X != X’
Information is lost (irreversible)
Compression ratio: \(\vert X\vert /\vert Y\vert \)
Where \(\vert X\vert \) is the number of bits (i.e., file size) of X
Huffman coding
Compression
Determine frequencies
Build a tree of prefix codes
no code is a prefix of another code
start with minheap, then keep putting trees together
Write the prefix codes to the output
reread source file and write prefix code to the output file
Decompression
read in prefix code - build tree
read in one bit at a time and follow tree
ASCII characters - 8 bits, 2^7 = 128 characters
cost - total number of bits
“straight cost” - bits / character = log2(numDistinctChars)
Priority Queue Example
insert (x)
deleteMin()
findMin()
isEmpty()
makeEmpty()
size()
2.2.4. Hash tables#
java: load factor = .75, default init capacity: 16, uses buckets
string hash function: s[0]*31^(n-1) + s[1]*31^(n-2) + … + s[n-1] where n is length mod (table_size)
Standard set of operations: find, insert, delete
No ordering property!
Thus, no findMin or findMax
Hash tables store key-value pairs
Each value has a specific key associated with it
fixed size array of some size, usually a prime number
A hash function takes in a “thing” )string, int, object, etc._
returns hash value - an unsigned integer value which is then mod’ed by the size of the hash table to yield a spot within the bounds of the hash table array
Three required properties
Must be deterministic
Meaning it must return the same value each time for the same “thing”
Must be fast
Must be evenly distributed
implies avoiding collisions
Technically, only the first is required for correctness, but the other two are required for fast running times
A perfect hash function has:
No blanks (i.e., no empty cells)
No collisions
Lookup table is at best logarithmic
We can’t just make a very large array - we assume the key space is too large
you can’t just hash by social security number
hash(s)=(∑k−1i=0si∗37^i) mod table_size
you would precompute the powers of 37
collision - putting two things into same spot in hash table
Two primary ways to resolve collisions:
Separate Chaining (make each spot in the table a ‘bucket’ or a collection)
Open Addressing, of which there are 3 types:
Linear probing
Quadratic probing
Double hashing
Separate Chaining
each bucket contains a data structure (like a linked list)
analysis of find
The load factor, λ, of a hash table is the ratio of the number of elements divided by the table size
For separate chaining, λ is the average number of elements in a bucket
Average time on unsuccessful find: λ
Average length of a list at hash(k)
Average time on successful find: 1 + (λ/2)
One node, plus half the average length of a list (not including the item)
typical case will be constant time, but worst case is linear because everything hashes to same spot
λ = 1
Make hash table be the number of elements expected
So average bucket size is 1
Also make it a prime number
λ = 0.75
Java’s Hashtable but can be set to another value
Table will always be bigger than the number of elements
This reduces the chance of a collision!
Good trade-off between memory use and running time
λ = 0.5
Uses more memory, but fewer collisions
Open Addressing: The general idea with all of them is that, if a spot is occupied, to ‘probe’, or try, other spots in the table to use
3 Types:
General: pi(k) = (hash(k) + f(i)) mod table_size 1.Linear Probing: f(i) = i
Check spots in this order :
hash(k)
hash(k)+1
hash(k)+2
hash(k)+3
These are all mod table_size
find - keep going until you find an empty cell (or get back)
problems
cannot have a load factor > 1, as you get close to 1, you get a lot of collisons
clustering - large blocks of occupied cells
“holes” when an element is removed 2.Quadratic: f(i) = i^2
hash(k)
hash(k)+1
hash(k)+4
hash(k)+9
you move out of clusters much quicker 3.Double hashing: i * hash2(k)
hash2 is another hash function - typically the fastest
problem where you loop over spots that are filled - hash2 yields a factor of the table size
solve by making table size prime
hash(k) + 1 * hash2(k)
hash(k) + 2 * hash2(k)
hash(k) + 3 * hash2(k)
a prime table size helps hash function be more evenly distributed
problem: when the table gets too full, running time for operations increases
solution: create a bigger table and hash all the items from the original table into the new table
position is dependent on table size, which means we have to rehash each value
this means we have to re-compute the hash value for each element, and insert it into the new table!
When to rehash?
When half full (λ = 0.5)
When mostly full (λ = 0.75)
Java’s hashtable does this by default
When an insertion fails
Some other threshold
Cost of rehashing
Let’s assume that the hash function computation is constant
We have to do n inserts, and if each key hashes to the same spot, then it will be a Θ(n2) operation!
Although it is not likely to ever run that slow
Removing
You could rehash on delete
You could put in a ‘placeholder’ or ‘sentinel’ value
gets filled with these quickly
perhaps rehash after a certain number of deletes
has functions
MD5 is a good hash function (given a string or file contents)
generates 128 bit hash
when you download something, you download the MD5, your computer computes the MD5 and they are compared to make sure it downloaded correctly
not reversible because when a file has more than 128 bits, won’t be 1-1 mapping
you can lookup a MD5 hash in a rainbow table - gives you what the password probably is based on the MD5 hash
SHA (secure Hash algorithm) is much more secure
generates hash up to 512 bits


What happens to the animals once they've been taken in?
This chart explores the relationship between the animal's intake reason and its outcome.
Because strays dominate the overall shelter population, it's unsurprising that they also make up the largest percentage of all possible outcome paths. Strays appear to be the source for the overwhelming majority of adoptions.
While animals that are surrendered for biting or other behavioral issues are sometimes reclaimed, there are no instances of an animal being reclaimed after being surrendered due to moving, landlord issues, or relationship splits. This suggests that the owner's living situation can become more of an obstacle to pet ownership than the behavior of the pet.
Over 75% of the animals taken in were either adopted, transfered (to a rescue group or a shelter) or placed in foster homes. Fewer than 15% were reclaimed by their owners. A small number (105 animals, of a total of 4117 intakes) were euthanized.
Because cats and dogs make up the overwhelming majority of shelter animals in this facility, it isn't surprisng that they make up the majority of animals that are euthanized. Other animal groups combine for a fraction of the euthanasia numbers as cats and dogs.


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Ether Voxel Space
- Let's create a piece of 3d art togETHer. One voxel at a time.
Micro White Paper
- World size is limited to 256x256x256 forever
- Every voxel has it's own x,y,z coordinates (0 to 255), color and owner properties
- There are 16 available colors (but new can be introduced, to maximum 256 colors/materials)
- Users can perform only 4 types of actions:
- Place (create) a new voxel in chosen position and color
- Repaint existing owned voxel
- Destroyed owned voxel
- Transfer voxel's ownership to someone else
- The fee for every action is 0.0001 ETH (apart from transaction fees)
- Contract address: 0x2Eab1392d6850722d19BE...
- Dapp source code: github.com/ethervoxelspace


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Results
| Drug | Price (USD) |
|---|---|
| {{ key }} | {{ val }} |
| Drug | Price (USD) |
|---|---|
| {{ key }} | {{ val }} |


{% from 'flagit/includes/macros.html' import date_by_user with context %}
{{ date_by_user(object.created, object.creator) }}


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Data Structures | |
| struct | dma_pool |
| DMA memory pool. More... | |
Modules | |
| Generic DMA pool allocator | |
Functions | |
| void | dma_pool_init_coherent_physmem (struct dma_pool *dmapool, struct physmem_pool *phys_pool, unsigned int nr_objects, size_t objsize, unsigned int align_order) |
| Initialize a DMA pool using the physmem allocator. | |
| static void | dma_pool_init_coherent (struct dma_pool *pool, phys_addr_t phys_start, size_t size, size_t objsize, unsigned int align_order) |
| Initialize a DMA-coherent memory pool. | |
| static dma_addr_t | dma_pool_alloc (struct dma_pool *pool) |
| Allocate an object from a DMA pool. | |
| static void | dma_pool_free (struct dma_pool *pool, dma_addr_t addr) |
| Free an object previously allocated from pool. |
This is a memory pool allocator for DMA memory. DMA memory differs from "regular" memory in that both the physical and virtual addresses are kept track of, and cache coherency issues are easier to deal with.
On cache- and MMU-less processors, DMA memory pools are essentially identical to regular memory pools. Nevertheless, it is highly recommended to utilize DMA memory for any memory which is to be used in data transfers involving hardware, as it will make the code more easily portable to other chips.
| dma_addr_t dma_pool_alloc | ( | struct dma_pool * | pool | ) | [inline, static] |
Allocate an object from a DMA pool.
| pool | The pool from which the object will be allocated |
Definition at line 77 of file dmapool_nommu.h.
References mem_pool_alloc(), dma_pool::mempool, and dma_addr_t::ptr.
| void dma_pool_free | ( | struct dma_pool * | pool, | |
| dma_addr_t | addr | |||
| ) | [inline, static] |
Free an object previously allocated from pool.
| pool | The pool from which the object was allocated | |
| addr | The physical and virtual address of the object |
Definition at line 87 of file dmapool_nommu.h.
References mem_pool_free(), dma_pool::mempool, and dma_addr_t::ptr.
| void dma_pool_init_coherent | ( | struct dma_pool * | pool, | |
| phys_addr_t | phys_start, | |||
| size_t | size, | |||
| size_t | objsize, | |||
| unsigned int | align_order | |||
| ) | [inline, static] |
Initialize a DMA-coherent memory pool.
This function will initialize a pool of fixed-size objects located in DMA-coherent memory. Since the memory is coherent, no cache synchronization is needed before and after DMA data transfers.
| pool | The DMA pool to be initialized | |
| phys_start | The physical address of the underlying memory area | |
| size | The size of the underlying memory area in bytes | |
| objsize | The size of each object in bytes | |
| align_order | log2 of the minimum object alignment in bytes |
Definition at line 69 of file dmapool_nommu.h.
References mem_pool_init(), and dma_pool::mempool.
Referenced by dma_pool_init_coherent_physmem().
| void dma_pool_init_coherent_physmem | ( | struct dma_pool * | dmapool, | |
| struct physmem_pool * | phys_pool, | |||
| unsigned int | nr_objects, | |||
| size_t | objsize, | |||
| unsigned int | align_order | |||
| ) |
Initialize a DMA pool using the physmem allocator.
This function will grab enough physical memory for nr_objects from phys_pool and use this to initialize dmapool.
| dmapool | The DMA pool to be initialized. | |
| phys_pool | The physical memory pool from which to grab memory | |
| nr_objects | The number of objects in the pool | |
| objsize | The size of each object in bytes. | |
| align_order | log2 of the minimum object alignment in bytes. |
Definition at line 67 of file dmapool.c.
References assert, dma_pool_init_coherent(), physmem_alloc(), PHYSMEM_ALLOC_ERR, and round_up.


I am Anuj Verma.
Currently pursuing Bachelor's of Computer Application from University of Petroleum and Energy Studies.


This sample phone application provides a showcase of available notification styles and demonstrates various features of the Android Wear notifications API. Running the sample on your phone allows you to select between various notification styles and to see how these notifications are displayed, both in a phone's notification shade and on the wearable. The sample allows you to create the following types of notifications:
This sample also allows you to toggle other attributes for each of these notification types, including whether a content intent or action are included, and whether the notification is marked as "local only," indicating that it should not be bridged between devices.


{% extends "mturk/experiments/filter_content.html" %} {% block instructions_summary %} Click on the objects that are planar. Consider only the part outlined with a red shape. {% endblock %} {% block instructions_extra %}
Planar shapes can have some amount of variation, such as the pattern on a wood door, or the grooves between bricks. However, two different planar surfaces (such as two walls in the same shape) do not count and should be rejected.
{% endblock %} {% block counter_name %} object(s) are labeled as planar. {% endblock %}


Beowulf
by Francis Barton Gummere
Chapter 35
Additional Information
- Year Published: 1910
- Language: English
- Country of Origin: England
- Source: Gummere, F.B. (1910) Beowulf New York: P.F. Collier and Son
-
Readability:
- Flesch–Kincaid Level: 11.2
- Word Count: 439
- Genre: Epic
- Keywords: british literature
- ✎ Cite This
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'TWAS now, men say, in his sovran's need
that the earl made known his noble strain,
craft and keenness and courage enduring.
Heedless of harm, though his hand was burned,
hardy-hearted, he helped his kinsman.

So had they killed it, kinsmen both,
athelings twain: thus an earl should be
in danger's day! — Of deeds of valor
this conqueror's-hour of the king was last,
of his work in the world. The wound began,
which that dragon-of-earth had erst inflicted,
to swell and smart; and soon he found
in his breast was boiling, baleful and deep,
pain of poison. The prince walked on,
wise in his thought, to the wall of rock;
then sat, and stared at the structure of giants,
where arch of stone and steadfast column
upheld forever that hall in earth.
Yet here must the hand of the henchman peerless
lave with water his winsome lord,
the king and conqueror covered with blood,
with struggle spent, and unspan his helmet.
Beowulf spake in spite of his hurt,
his mortal wound; full well he knew
his portion now was past and gone
of earthly bliss, and all had fled
of his file of days, and death was near:
"I would fain bestow on son of mine
this gear of war, were given me now
that any heir should after me come
of my proper blood. This people I ruled
fifty winters. No folk-king was there,
none at all, of the neighboring clans
who war would wage me with 'warriors'-friends' [footnote 1]
and threat me with horrors. At home I bided
what fate might come, and I cared for mine own;
feuds I sought not, nor falsely swore
ever on oath. For all these things,
though fatally wounded, fain am I!
From the Ruler-of-Man no wrath shall seize me,
when life from my frame must flee away,
for killing of kinsmen! Now quickly go
and gaze on that hoard 'neath the hoary rock,
Wiglaf loved, now the worm lies low,
sleeps, heart-sore, of his spoil bereaved.
And fare in haste. I would fain behold
the gorgeous heirlooms, golden store,
have joy in the jewels and gems, lay down
softlier for sight of this splendid hoard
my life and the lordship I long have held."
Footnotes
1. That is, swords.