Question

I’m looking for fast string concatenation class or so in Flex.
Like StringBuilder in Java.

Thanks

Answer 1

var str1:String = "Vinoth";
var str2:String = "Babu";
var str3:String = "Chennai";
var str4:String = concat(str1, " ", str2, " ", str3)

trace(str4) would result you
str4 == “Vinoth babu Chennai”

String Concat Class

public class StringBuffer
{
    public var buffer:Array = new Array();

    public function add(str:String):void
    {
        for (var i:Number = 0; i < str.length; i++)
        {
            buffer.push(str.charCodeAt(i));
        }
    }

    public function toString():String
    {
        return String.fromCharCode.apply(this, buffer);
    }
}

Here you have a more indepth than the above class written.

http://blogs.adobe.com/pfarland/2007/10/avoiding_string_concatenation.html