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Re: eval NoOp on cmd.exe line expr

by kennethk (Abbot)
on Mar 13, 2017 at 23:36 UTC ( #1184502=note: print w/replies, xml ) Need Help??

in reply to eval NoOp on cmd.exe line expr

rename ($was, $_) unless $was = $_;
will always evaluate true because because you are using the assignment operator (=) not the string equivalence operator (eq). You should have gotten a warning about that one running the posted code.

Reading Basic debugging checklist may be helpful. An essential element is use print/say and/or Data::Dumper to make sure variables contain what you think they should.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

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