Test.hx
import haxe.ds.GenericStack;
class Test 
{
	var arrayFunctionHolder:Array<String> -> Void;
	var stackFunctionHolder:GenericStack<String> -> Void;
	
	static public function arrayFunction<T>(param:Array<T>):Void
	{
	}
	
	static public function stackFunction<T>(param:GenericStack<T>):Void
	{
	}
	
	static public function stackFunction2(param:GenericStack<String>):Void
	{
	}
	
	public function new()
	{
		arrayFunctionHolder = arrayFunction;	// ok
//		stackFunctionHolder = stackFunction;	// error...
//		stackFunctionHolder = stackFunction<String>;	// error...
//		stackFunction<String>(new GenericStack<String>());	// error...
		stackFunction2(new GenericStack<String>());	// ok
		var hoge:Hoge<String> = new Hoge(stackFunction);	// ok...
	}
}
class Hoge<T>
{
	public var hoge2:Hoge2<T>;
	public function new(func:GenericStack<Hoge2<T>> -> Void) 
	{
		hoge2 = new Hoge2<T>();
	}
}
class Hoge2<T>
{
	public var stackFunctionHolder:GenericStack<T>;
	public function new() 
	{
	}
}
(´・ω・｀)