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Re: Common Regex Gotchas

by Desdinova (Friar)
on Mar 14, 2001 at 22:41 UTC ( #64448=note: print w/ replies, xml ) Need Help??

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  1. or download this
    #!/usr/local/bin/perl -w
    use strict;
    ...
    );
    
    exit;
    
  2. or download this
    Benchmark: timing 500000 iterations of Method One UC, Method Three s, 
    +Method Two TR...
    Method One UC:  1 wallclock secs ( 1.42 usr +  0.00 sys =  1.42 CPU) @
    + 352112.68/s (n=500000)
    Method Three s: 16 wallclock secs (17.03 usr +  0.00 sys = 17.03 CPU) 
    +@ 29359.95/s (n=500000)
    Method Two TR:  1 wallclock secs ( 2.04 usr +  0.00 sys =  2.04 CPU) @
    + 245098.04/s (n=500000)
    
  3. or download this
     my $data = 'for-bar-baz';
       $data =~ s/-/_/g;
    ...
     my $data = 'for-bar-baz';
     $data =~tr/-/_/;
     print $data;
    
  4. or download this
    Benchmark: timing 500000 iterations of Method One TR, Method Two s...
    Method One TR:  2 wallclock secs ( 1.87 usr +  0.00 sys =  1.87 CPU) @
    + 267379.68/s (n=500000)
    Method Two s:  5 wallclock secs ( 4.84 usr +  0.00 sys =  4.84 CPU) @ 
    +103305.79/s (n=500000)
    

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