Definition of "matcher" [match•er]

• Something that matches. (noun)

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• ""As the control and data planes merge, we see multicore chips with datapath accelerators-a queue manager, a crypto engine, a regular-expression matcher-encroaching on the traditional ASIC approach.""
• "· Multibyte regexp: Regular expression matcher is aware of multibyte string; you can use multibyte characters both in patterns and matched strings."
• "JavaScript interpreter, and the standard Java regular expression matcher) treat backslash specially."