MapIndexed

MapIndexed[f, expr] applies f to the elements of expr, giving the part specification of each element as a second argument to f.

MapIndexed[f, expr, levspec] applies f to all parts of expr on levels specified by levspec.

Example: MapIndexed[f, a, b, c] .

Level specifications are described in Section A.3.6.

The default value for levelspec in MapIndexed is {1}.

Example: MapIndexed[f, a, b, c, d, Infinity] .

See Section 2.2.4.

See also: MapAt.

New in Version 2.

Further Examples