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Re: Hidden features of Perl

by eyepopslikeamosquito (Canon)
on Jun 22, 2009 at 23:44 UTC ( #773791=note: print w/ replies, xml ) Need Help??

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  1. or download this
    Golfing Technique                     Inventor           Year
    -----------------                     --------           ----
    \$h{X} is one less than ++$h{X}
           aka Thelen's Device            The Thelen         2002
    -i and $^I for data value             The Sperling       2002
  2. or download this
    -=! and -=!!        - flathead
    +=! and +=!!        - phillips
    $x x=!! $y  is same as $x = '' unless $y;
    $x x=!  $y       --    $x = '' if $y;
  3. or download this
    Operator     Nickname                Function
    +=!   +=!!   Phillips
    x=!   x=!!   Pozidriv
    *=!   *=!!   Torx
  4. or download this
    Constant     Nickname                Value
    <=><=><=>    Space fleet             0
    <~>          Amphisbaena             $ENV{HOME}

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