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Re: Anyone use "xor" in conditionals?

by Abigail-II (Bishop)
on Jul 14, 2003 at 06:11 UTC ( #273887=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: Anyone use "xor" in conditionals?
in thread Anyone use "xor" in conditionals?

Because I have warnings turned on.

Abigail


Comment on Re: Anyone use "xor" in conditionals?
Re: Re: Anyone use "xor" in conditionals?
by BUU (Prior) on Jul 14, 2003 at 23:29 UTC
    perl -we"print 'omg' if -d 'bcc' == -d 'cygwin'"

    That doesn't raise an error on my windows box, or even a warning and works exactly as expected?
      Try it with a non-existent directory. Perl will warn if you do a numeric comparison with an undefined expression, while undef will evaluate as false in a boolean comparison.

      HTH

      PS Change the 'if' in your original node to 'unless', but I'm guessing you already know that...

      $ perl -we"print 'omg' if -d 'bcc' == -d 'cygwin'" Use of uninitialized value in numeric eq (==) at -e line 1. Use of uninitialized value in numeric eq (==) at -e line 1. omg$ ls bcc cygwin ls: bcc: No such file or directory ls: cygwin: No such file or directory $

      Abigail

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