DZone Snippets: functions code

Random Number

rcube9 (rajesh) — Wed, 02 Apr 2008 18:13:06 GMT

function randRange(min:Number, max:Number):Number {
var randomNum:Number = Math.floor(Math.random() * (max - min + 1)) + min;
return randomNum;
}

collapseWhiteSpace

rcube9 (rajesh) — Wed, 02 Apr 2008 18:05:47 GMT

Arguments

rcube9 (rajesh) — Wed, 02 Apr 2008 02:46:38 GMT

/*
function traceFunctions():Void {
for (var i=0; i < arguments.length; i++){
trace(arguments[i]);
}
}

traceFunctions("One","Two");
*/

Arguments.caller

rcube9 (rajesh) — Wed, 02 Apr 2008 02:45:36 GMT

/*
function function1():Void{
function2();
}
function function2():Void{
if(arguments.caller == function1)
trace("function2 called from function1");
else
trace("function2 not called from function1");
}

function1();
function2();
*/

Referencing Functions

rcube9 (rajesh) — Wed, 02 Apr 2008 02:39:48 GMT

function CalculateArea(a:Number, b:Number):Number
{
var nArea:Number = a*b;
return nArea
}

var fCalculate:Function = CalculateArea;
trace(fCalculate(6,6));

Anonmyous Function

rcube9 (rajesh) — Wed, 02 Apr 2008 02:00:28 GMT

var fSayHi:Function = function(sName:String):Void {
trace("Hi, " + sName);
};
fSayHi("Joey"); // Displays: Hi, Joey

Creating Recursion Function

rcube9 (rajesh) — Wed, 02 Apr 2008 01:59:41 GMT

function factorial(nOperand:Number):Number {
if (nOperand>0) {
return nOperand*factorial(nOperand-1);
} else {
return 1;
}
}
trace(factorial(5));

Overloading a Function

rcube9 (rajesh) — Wed, 02 Apr 2008 01:54:11 GMT

//Overloading a Function
function fCalculateArea():Number{
switch (arguments.length){
case 1:
var nRadius = arguments[0];
return nRadius * nRadius;
case 2:
var nA = arguments[0];
var nB = arguments[1];
return nA * nB;
}
}

trace(fCalculateArea(5,2));

str_hex and hex_str

jonasj (Jonas J.) — Tue, 16 May 2006 01:41:34 GMT

// Convert hex to string and vice versa.
//
// (Source: http://codedump.jonasjohn.de/)



function str_hex($string){

    $hex='';

    for ($i=0; $i < strlen($string); $i++){

        $hex .= dechex(ord($string[$i]));

    }

    return $hex;

}





function hex_str($hex){

    $string='';

    for ($i=0; $i < strlen($hex)-1; $i+=2){

        $string .= chr(hexdec($hex[$i].$hex[$i+1]));

    }

    return $string;

}



// example:



$hex = str_hex("test sentence...");

// $hex contains 746573742073656e74656e63652e2e2e



print hex_str($hex);

// outputs: test sentence...