Overriding Built-in Functions

First make sure you can override it 

>perl -wle"print( prototype( 'CORE::chomp' ) )"
Use of uninitialized value in print at -e line 1.   <- Can't


>perl -wle"print( prototype( 'CORE::push' ) )"
\@@                                                 <- Can

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Then go ahead and do it: 

BEGIN {
   *CORE::GLOBAL::push = sub(\@@) {
      my $array = shift(@_);
      print("Pushing\n");
      return CORE::push(@$array, @_);
   };
}

[download]

In reply to Re: Hook::LexWrap and core functions by ikegami
in thread Hook::LexWrap and core functions by Alien

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