Starting from Haxe 3.0, the Haxe language supports Array comprehensions, using the following syntax:

var a = [for( x in 0...10 ) x];
trace(a); // [0,1,2,3,4,5,6,7,8,9]

Any Iterable value can be used in the for construct, just like a normal for.

Additionally, it is possible to filter the elements with an if test:

var b = [for( x in a ) if( x % 2 == 0 ) x];
trace(b); // [0,2,4,6,8]

Haxe's comprehensions also support while constructs and nested loops:

var c = [for( x in 0...4 ) for( i in 0...x+1 ) i];
trace(c); // [0,0,1,0,1,2,0,1,2,3]

var count = 10;
var d = [while(count > 0) count-- ];
trace(d); // [10,9,8,7,6,5,4,3,2,1]