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var win = Ti.UI.createWindow({
	backgroundColor: 'white'
});

win.addEventListener('click', function foo(e) { // note the named function expression needed for the second way
	
	// oringal idea by @fukhaos
	// http://www.tidev.io/2014/09/10/the-case-against-ti-app-fireevent-2/#comment-13013
	e.source.removeEventListener(e.type, arguments.callee);
	
	// better - strict - one by @tonylukasavage
	// https://twitter.com/tonylukasavage/status/511887565100949505
	e.source.removeEventListener(e.type, foo);
	
	alert('I will only fire once!');	
});

win.open();