Randomize Everything » casting http://www.bartclaessens.com And create the perfect world Sat, 17 Jul 2010 11:57:07 +0000 en hourly 1 http://wordpress.org/?v=3.0.5 Quicktip #1: Casting to Number() http://www.bartclaessens.com/2008/11/quicktip-1-casting-to-number/ http://www.bartclaessens.com/2008/11/quicktip-1-casting-to-number/#comments Fri, 21 Nov 2008 09:52:45 +0000 Bart Claessens http://www.bartclaessens.com/?p=80 Did you know that casting a String to a Number using the ‘as’ operator returns 0 instead of the correct number? Use the Number() constructor to cast it correctly. The same applies for ‘int’ and ‘uint’.

var myNumber:String = '15';
trace("My Number: " + myNumber);
 
var castedNumber:Number = myNumber as Number;
trace("My Number (casted with 'as' operator): " + castedNumber);
 
var betterCastedNumber:Number = Number(myNumber);
trace("My Number (casted using Number() constructor): " + betterCastedNumber);
 
// Output:
// My Number: 15
// My Number (casted with 'as' operator): 0
// My Number (casted using Number() constructor): 15
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