Function bind

Creates a function that invokes func with the this binding of thisArg and partials prepended to the arguments it receives.

The bind.placeholder value, which defaults to _ in monolithic builds, may be used as a placeholder for partially applied arguments.

Note: Unlike native Function#bind, this method doesn't set the "length" property of bound functions.

function greet(greeting, punctuation) {
  return greeting + ' ' + this.user + punctuation;
}

var object = { 'user': 'fred' };

var bound = bind(greet, object, 'hi');
bound('!');
// => 'hi fred!'

// Bound with placeholders.
var bound = bind(greet, object, _, '!');
bound('hi');
// => 'hi fred!'
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