Passing var type name as parameter?

[yanmoura]

Hi,

I would like to know if is possible to pass a var type as parameter to a function. I have several sounds in library, and I would like to do something like that:

function PlayMe(soundname:String)
{
	var snd:this[soundname] = new this[soundname];
	snd.play();
}

Thanks!

[5TonsOfFlax]

Yes, you need to pass the Class instead of a String. If for some reason you want to get a Class by name, use getDefinitionByName.

function playMe(soundclass:Class):void{
  var snd:Sound = new soundclass(); //assumes that soundclass extends Sound.  
  snd.play();
}

[senocular]

With this, note that types (anything after the ":" in a variable declaration) cannot be dynamic. They need to be known types at compile time. Any value passed into a function as an argument or other variables have dynamic values that cannot be used as types.

If you have no idea what the soundclass class really is (is it a Sound? Or something else?) then you would have to type your variable as a generic Object.

[yanmoura]

Thanks a lot 5Tons, is exactly what I was looking for!

[yanmoura]

Thanks Senocular,

Good tip. I always fall in this pitfall, and am always trying to make a dynamics declaration after :!