KeyMap

KeyMap[f,key₁val₁,key₂val₂,…]

maps f over the keys in an association, giving f[key₁]val₁,f[key₂]val₂,….

represents an operator form of KeyMap that can be applied to an expression.

Details

If any of the f[key_i] 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

(10.0)

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