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Re: Why I Hate Nested If-Else blocks

by dws (Chancellor)
on Jan 04, 2002 at 02:33 UTC ( #136125=note: print w/ replies, xml ) Need Help??

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  1. or download this
      if ( ! ref $_[0] ) {
      return undef;
  } else {
      blah($_[0]);
  }
  2. or download this
      return undef unless ref $_[0];  # guard clause

  blah($_[0]);

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