On Mar 15, 10:35 am, Tobie Langel <tobie.lan...@gmail.com> wrote:
> The difficulty of abstracting your solution comes from the need for
> the bound function to keep a reference to the original length of the
> array so a to reset it before passing it to the original function.
> I suspect that the cleanest solution might be to keep a generic array
> updating method and reset the original before calling it.

Isn't that what your "internal" (used with `Function.prototype`
extensions) `update` does?

function update(array, args) {
    var arrayLength = array.length, length = args.length;
    while (length--) array[arrayLength + length] = args[length];
    return array;

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