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ToExpression (modified)HoldPattern

Verbatim

FilledSmallSquareVerbatim[expr] represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.

FilledSmallSquareVerbatim[x_] will match only the actual expression x_.

FilledSmallSquareVerbatim is useful in setting up rules for transforming other transformation rules.

FilledSmallSquareVerbatim[expr] does not maintain expr in an unevaluated form.

FilledSmallSquare See The Mathematica Book: Section 2.3.12.

FilledSmallSquare See also: HoldPattern.

Further Examples

ToExpression (modified)HoldPattern