User Guide

Operators 153

The following example illustrates the use of the inequality (!=) operator in an if statement:

var a:String = "David";

var b:String = "Fool";

if (a != b) {

trace("David is not a fool");

}

The following example illustrates comparison by reference with two functions:

var a:Function = function() { trace("foo"); };

var b:Function = function() { trace("foo"); };

a(); // foo

b(); // foo

trace(a != b); // true

a = b;

a(); // foo

b(); // foo

trace(a != b); // false

// trace statement output: foo foo true foo foo false

The following example illustrates comparison by reference with two arrays:

var a:Array = [ 1, 2, 3 ];

var b:Array = [ 1, 2, 3 ];

trace(a); // 1, 2, 3

trace(b); // 1, 2, 3

trace(a!=b); // true

a = b;

trace(a); // 1, 2, 3

trace(b); // 1, 2, 3

trace(a != b); // false

// trace statement output: 1,2,3 1,2,3 true 1,2,3 1,2,3 false