Kristina kgarfinkel

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kgarfinkel / gist:7063475

Created October 20, 2013 00:53

Underscore.js's 'once' re-implemented. Returns a function that can only be called one time. Repeated calls to the modified function will result in returning the value from the original call

	_.once = function(func) {
	var alreadyCalled = false,
	result;

	return function() {
	if(!alreadyCalled) {
	result = func.apply(this, arguments);
	alreadyCalled = true;
	}

kgarfinkel / gist:7063179

Created October 20, 2013 00:12

Javascript's 'call' re-implemented

	var call = function(fn, context) {
	var args = Array.prototype.slice.call(arguments, 2).join(‘,’),
	result;

	context.fn = fn;
	result = eval(“context.fn(“+ args +”)”);
	delete this.fn;

	return result;
	};

kgarfinkel / gist:7062984

Created October 19, 2013 23:47

_.first return's an array of the first n elements of an array.

	_.first = function(array, n) {
	if (n === undefined) {
	return array[0];
	}

	return slice.call(array, 0, n);
	};

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