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  • From Regexes to Parsing Expression Grammars

    White Papers // Oct 2012 // provided by PUC

    Most scripting languages now-a-days use regex pattern-matching libraries. These regex libraries borrow the syntax of regular expressions, but have an in-formal semantics that is different from the semantics of regular expressions, removing the commutativity of alternation and adding ad-hoc extensions that cannot be expressed by formalisms for efficient recognition of ...

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