I have another question about $A and similar.
Why you prefer do this
var results = [];
for (var i = 0, length = iterable.length; i < length; i++)
results.push(iterable[i]);
instead of
var length = iterable.length, results = new Array(length);
for (var i = 0; i < length; i++)
results[i] = iterable[i];
It's more faster!
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