Why new syntax here? This is just a method that's missing: `array.last(n)`.
`array[-1]` would break things and it is difficult to find out where. Consider: ``` javascript for (var i = array.length - 1; array[i]; i--) doSomething(array[i]); ``` Not the best way to write such a loop but changing `array[-1]` would break it.
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