matching pattern what is
Definition of Pattern Matching for programmer: the constituents of a given pattern. In contrast to.

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Definition Pattern Matching

Explanation: Pattern matching is the act of checking for the presence of the constituents of a given pattern. In contrast to pattern recognition, the pattern is rigidly specified. Such a pattern concerns conventionally either sequences or tree structures. Pattern matching is used to check that things have the desired structure, to find relevant structure, to retrieve the aligning parts, and to substitute the matching part with something else.

Other definitions in programming such as Pattern Matching in Dictionary P.