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What's the difference between backtracking and depth first search?
... tree structures. From Wikipedia:
One starts at the root (selecting some node as the root in the graph case) and explores as far as possible along each branch before backtracking.
It uses backtracking as part of its means of working with a tree, but is limited to a tree structure.
Backtracki...
Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
...s rather strange...
Wouldn't it be much clearer to say while(true) , or something along those lines?
20 Answers
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How to atomically delete keys matching a pattern using Redis
In my Redis DB I have a number of prefix:<numeric_id> hashes.
23 Answers
23
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How to add Options Menu to Fragment in Android
I am trying to add an item to the options menu from a group of fragments.
20 Answers
2...
How to make Git “forget” about a file that was tracked but is now in .gitignore?
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the process that workd for me was 1. commit pending changes first 2. git rm --cached <file> and commit again 3. add the file to .gitignore, check with git status and commit again
– mataal
Aug 13 '09 at 21:0...
How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
... from the event.
var deregisterListener = $scope.$on("onViewUpdated", callMe);
deregisterListener (); // this will deregister that listener
This is found in the source code :) at least in 1.0.4. I'll just post the full code since it's short
/**
* @param {string} name Event name to listen on.
...
Build android release apk on Phonegap 3.x CLI
...4.0 and higher see below.
Found part of the answer here, at Phonegap documentation. The full process is the following:
Open a command line window, and go to /path/to/your/project/platforms/android/cordova.
Run build --release. This creates an unsigned release APK at /path/to/your/project/platfor...
Why use sprintf function in PHP?
...ng to learn more about the PHP function sprintf() but php.net did not help me much as I am still confused, why would you want to use it?
...
Get average color of image via Javascript
...://jsfiddle.net/xLF38/818/
Note, this will only work with images on the same domain and in browsers that support HTML5 canvas:
function getAverageRGB(imgEl) {
var blockSize = 5, // only visit every 5 pixels
defaultRGB = {r:0,g:0,b:0}, // for non-supporting envs
canvas = docume...
Pretty printing XML with javascript
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If this is so, the simplest way to achieve this is to process the XML document with the identity transformation and with an <xsl:output indent="yes"/> instruction:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="ye...