LeafCount

• LeafCount gives a measure of the total "size" of an expression.

• LeafCount counts the number of subexpressions in expr which correspond to "leaves" on the expression tree.

• Example: LeafCount[1 + a + b^2].

• LeafCount is based on FullForm representation of expressions.

• Numbers with heads Rational and Complex are treated as composite objects, just as in FullForm.

• See Section 2.14.4.

• See also: ByteCount, Length, Depth, AtomQ.

• New in Version 1.