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Re: Re: Perl Idioms Explained - && and || "Short Circuit" operators

by davido (Archbishop)
on Oct 24, 2003 at 18:15 UTC ( #301915=note: print w/replies, xml ) Need Help??

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  1. or download this
        $a = $b or $c;     # bug: this is wrong
        ($a = $b) or $c;   # really means this
        $a = $b || $c;     # better written this way  
    
  2. or download this
        @info = stat($file) || die;    # oops, scalar sense of stat!
        @info = stat($file) or die;    # better, now @info gets its due  
    
  3. or download this
        open INFO, "< datafile"  or die "can't open datafile: $!";