Haxe simple example of using enums.

EnumDirection.hx

enum Direction {
	Left;
	Right;
	Up;
	Down;
}

function main() {
	currentDirection(Left);
	currentDirection(Right);
	currentDirection(Up);
	currentDirection(Down);
}

function currentDirection(direction:Direction) {
	switch (direction) {
		case Left:
			trace('facing left');
		case Right:
			trace('facing right');

		case Up:
			trace('facing up');
		case Down:
			trace('facing down');
	}
}

Example of using Enums

Here's where you can test it out: https://try.haxe.org/#bf815ADc