MAPCAR

Operates on successive elements of <list> (and of the other lists of <more-lists>).

<function> can be a function or function name. It is applied to the first element of each list, then to the second element of each list, and so on. The iteration terminates when the list runs out, or when the shorter list runs out if various lists are supplied. Excess elements in other lists are ignored.

The value returned is a list of the results of successive calls to <function>.