Level

Level[expr, levelspec] gives a list of all subexpressions of expr on levels specified by levelspec.

Level[expr, levelspec, f] applies f to the list of subexpressions.

Level uses the standard level specification described in Section A.3.6.

Level[expr, -1] gives a list of all "atomic" objects in expr.

Level traverses expressions in depth-first order, so that the subexpressions in the final list are ordered lexicographically by their indices.

See Section 2.1.7.

See also: Apply, Map, Scan.

New in Version 1.

Further Examples