use Perl

• And is not really the negation of or (Score:1)

  by btilly (5037)

  But that said, the operator that parallels &&= in this case can be defined by:
  
  $value = defined($value) ? $other_value : undef;
  
  but I'm not sure what it would be good for.
  • Re: (Score:2)

    by Ovid (2709)

    It's useful if you want to munge a value if it's defined. I've found it useful when doing something like this:

    $message &&= $cgi->p($message);

    In other words, if there is no message, don't stick in extraneous paragraph tags in the HTML. I'm sure there are plenty of other cases where you might want to take an extra action if a value is defined.
    • Re:And is not really the negation of or (Score:1)

      by btilly (5037) on 2007.11.19 13:44 (#59096) Journal

      So we need a && operator to go with //? :-P

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      • Re: (Score:2)

        by Ovid (2709)

        Heh. Something like that :) Now where are my Unicode cheat sheets ...