Level

Usage

• Level[expr, levelspec] gives a list of all subexpressions of expr on levels specified by levelspec.
• Level[expr, levelspec, f] applies f to the sequence of subexpressions.

Notes

• 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