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Assuming we have an array myArray: var value:* = myArray[int(Math.random() * myArray.length)]; Note we use int to cast the result of Math.random() to an int because values like 2.4539543 would not be a valid array index.

First define the circle radius and its center: var radius:Number = 100; var center:Point = new Point(35, 70); Then generate a random angle in radians from the center: var angle:Number = Math.random() * Math.PI * 2; Then generate an effective radius of the returned point, so it'll be inside ...

function randomAngleRadians():Number { return Math.random() * Math.PI * 2; } Example outputs: 5.490068569213088 3.1984284719180205 4.581117863808207

If you need to roll for a true or false in an "x% chance" situation, use: function roll(chance:Number):Boolean { return Math.random() >= chance; } Used like: var success:Boolean = roll(0.5); // True 50% of the time. var again:Boolean = roll(0.25); // True 25% of the time. ...

To get any random color: function randomColor():uint { return Math.random() * 0xFFFFFF; } If you need more control over the red, green and blue channels: var r:uint = Math.random() * 0xFF; var g:uint = Math.random() * 0xFF; var b:uint = Math.random() * 0xFF; var color:uint = r <&...

This is the built-in way to deal with "exceptions" without relying on third party libraries like Try::Tiny. my $ret; eval { $ret = some_function_that_might_die(); 1; } or do { my $eval_error = $@ || "Zombie error!"; handle_error($eval_error); }; # use $ret ...

To display the hunks that are staged for commit: git diff --cached

Current file You can get the name of the current PHP file (with the absolute path) using the __FILE__ magic constant. This is most often used as a logging/debugging technique. echo "We are in the file:" , __FILE__ , "\n"; Current directory To get the absolute path to the di...

The first step in optimizing for speed is finding the slowest sections of code. The Timer VBA function returns the number of seconds elapsed since midnight with a precision of 1/256th of a second (3.90625 milliseconds) on Windows based PCs. The VBA functions Now and Time are only accurate to a secon...

std::sort, found in the standard library header algorithm, is a standard library algorithm for sorting a range of values, defined by a pair of iterators. std::sort takes as the last parameter a functor used to compare two values; this is how it determines the order. Note that std::sort is not stable...

function isEven(n:Number):Boolean { return ((n & 1) == 0); } Examples: isEven(1); // false isEven(2); // true isEven(1.1); // false isEven(1.2); // false isEven(2.1); // true isEven(2.2); // true

function isOdd(n:Number):Boolean { return ((n & 1) == 1); } Examples: isOdd(1); // true isOdd(2); // false isOdd(1.1); // true isOdd(1.2); // true isOdd(2.1); // false isOdd(2.2); // false

Detailed instructions on getting openerp set up or installed in Debian/Ubuntu. To install from source code, we need Python 2.7, Git and a PostgreSQL database: $ sudo apt-get install git python-pip python2.7-dev -y $ sudo apt-get install postgresql -y $ sudo su -c "createuser -s $(whoami)&qu...

var alphabet:Vector.<String> = new <String>[ "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", &q...

The Flex compiler (mxmlc) is one of the most important parts of the Flex SDK. You can edit AS3 code in any text editor you like. Create a main class file that extends from DisplayObject. You can trigger builds at the command line as follows: mxmlc -source-path="." -default-size [width in...

The static method Date.now returns the number of milliseconds that have elapsed since 1 January 1970 00:00:00 UTC. To get the number of milliseconds that have elapsed since that time using an instance of a Date object, use its getTime method. // get milliseconds using static method now of Date co...

In a Service Provider register method we can bind an interface to an implementation: public function register() { App::bind( UserRepositoryInterface::class, EloquentUserRepository::class ); } From now on, everytime the app will need an instance of UserRepositoryInterface, Larave...

We can use the Service Container as a Registry by binding an instance of an object in it and get it back when we'll need it: // Create an instance. $john = new User('John'); // Bind it to the service container. App::instance('the-user', $john); // ...somewhere and/or in another class... ...

Solution 1: $('#parent').prepend($('#child')); Solution 2: $('#child').prependTo($('#parent')); Both solutions are prepending the element #child (adding at the beginning) to the element #parent. Before: <div id="parent"> <span>other content</span> </di...

Solution 1: $('#parent').append($('#child')); Solution 2: $('#child').appendTo($('#parent')); Both solutions are appending the element #child (adding at the end) to the element #parent. Before: <div id="parent"> <span>other content</span> </div> <d...