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All the Perl that's Practical to Extract and Report

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  • One does wonder whether the requirements are sensible when a FULL OUTTER JOIN is the correct answer, but I do understand the pleasure in finding the solution. About once a decade I use actual precondition/invariant/postcondition code-proof "in anger" because the loop isn't debuggable in practice. It feels good, but I wouldn't want to do it every day.
    # I had a sig when sigs were cool
    use Sig;