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FilledSmallSquareLeafCount[expr] gives the total number of indivisible subexpressions in expr.

FilledSmallSquareLeafCount gives a measure of the total "size" of an expression.

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

FilledSmallSquare Example: LeafCount[1 + a + b^2] LongRightArrow.

FilledSmallSquareLeafCount is based on FullForm representation of expressions.

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

FilledSmallSquare See The Mathematica Book: Section 2.13.4.

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

Further Examples