BUILT-IN WOLFRAM LANGUAGE SYMBOL
maps f over the keys in an association, giving .
represents an operator form of KeyMap that can be applied to an expression.
- If any of the are identical, the values associated with later instances replace those associated with earlier ones.
- KeyMap[f][expr] is equivalent to KeyMap[f,expr].
Map a function over the keys of an association:
Use the operator form of KeyMap:
Introduced in 2014