This is documentation for Mathematica 4, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)

CountRule (->)

MatchQ

FilledSmallSquareMatchQ[expr, form] returns True if the pattern form matches expr, and returns False otherwise.

FilledSmallSquare See The Mathematica Book: Section 2.3.5.

FilledSmallSquare See also: StringMatchQ.

Further Examples

CountRule (->)