Regular Expressions: lookaheads and lookbehinds

lookaheads and lookbehinds are collectively know as lookarounds. They act as anchored searches in Regexps

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This article discusses lookaheads and lookbehinds in Regular Expressions jointly know as lookarounds. Regular Expressions allow us to find specific strings in text files. Like finding evidence of a hacker in a gigabyte log file. Or a search for a specific word or words in long…