18 lines
520 B
JavaScript
18 lines
520 B
JavaScript
define(function () {
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// In Firefox, `Function.prototype.call` is faster than
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// `Function.prototype.apply`. In the optimized variant of
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// `bindCb` below, we exploit the fact that no Underscore
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// function passes more than four arguments to a callback.
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// **NOT general enough for use outside of Underscore.**
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function bindCb4(func, context) {
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if (context === void 0) return func;
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return function(a1, a2, a3, a4) {
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return func.call(context, a1, a2, a3, a4);
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};
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}
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return bindCb4;
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});
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