Ruby array iterator in JavaScript using Sweet.js

ruby-iterator.sjs

// Ever wish you could iterate JavaScript arrays like you do in Ruby?
// Well you can with this sweet.js macro.
macro do {
	rule infix { $lh.each | _ $rh _ $body ... end} => {
		$lh.forEach(function($rh){
			$($body) ...
		});
	}
}

// Now you can do:
var a = ['Yukihiro', 'Matsumoto'];

a.each do |i|
	console.debug('Hello ' + i);
end

// Try it in their editor
// http://sweetjs.org/browser/editor.html