`Map`¶

Applies a function to each element of a list.

$ wo 'Map[Sign, {-6, 0, 2, 5}]'
{-1, 0, 1, 1}

The short form /@ threads over any head, not just lists.

$ wo 'f /@ g[a, b]'
g[f[a], f[b]]

An atom has no parts, so mapping leaves it unchanged.

$ wo 'f /@ 5'
5

Map¶