Function at

Takes an integer value and returns the item at that index, allowing for positive and negative integers. Negative integers count back from the last item in the array-like.

Example

Basic usage

at(["a", "b"], 0) // "a"
at(["a", "b"], 1) // "b"
at(["a", "b"], 9) // undefined
at(["a", "b"], -1) // "b"
at(["a", "b"], -2) // "a"
at(["a", "b"], -9) // undefined

at("bar", 2) // "r"
at("bar", -1) // "r"

at(null, 0) // undefined
at(undefined, 1) // undefined
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