(jjhorner)Regexp glitch while parsing record in CSV

I'm not getting the same results as everyone else:

#!/usr/bin/perl -w

use strict;
use Benchmark;

my $string = " field1 , field2 , field3 , field4 , 
     field5 , field6 , field7 , field8 , field9 , 
     field10 , field11 , field12 "; 

sub regexp {
    $string =~ m#^(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*),(\s*)(\w*?)(\s*),
     (\s*)(\w*?)(\s*)$#o;
    my $s = $11;
    print $s;
}

sub splitter {
    my $s = (split(/\s*,\s*/, $string))[3];
    print $s;
}
[download]

Yields:

[22:31:17] Orders, Master? ./greenhorn-0716.pl
Benchmark: timing 100000 iterations of regexpression, splitting...
regexpression: 12 wallclock secs (12.78 usr +  0.00 sys = 12.78 CPU) @
+ 7824.73/s (n=100000)
 splitting:  8 wallclock secs ( 7.90 usr +  0.00 sys =  7.90 CPU) @ 12
+658.23/s (n=100000)
[download]

Is there something wrong with my code? I know that isn't the best regular expression ever created, but I would like to know why it doesn't beat the split.

Note: To whomever I saw with the shell prompt like I have above, that is so cool!

J. J. Horner
Linux, Perl, Apache, Stronghold, Unix
jhorner@knoxlug.org http://www.knoxlug.org/

Comment on (jjhorner)Regexp glitch while parsing record in CSV Select or Download Code

Replies are listed 'Best First'.
(chromatic) RE: (jjhorner)Regexp glitch while parsing record in CSV by chromatic (Archbishop) on Jul 17, 2000 at 07:57 UTC
Taking out the capturing parenthesis around the whitespace helped a lot. Here's the benchmark results: `Benchmark: timing 50000 iterations of regex, split... regex: 3 wallclock secs ( 3.03 usr + 0.01 sys = 3.04 CPU) split: 4 wallclock secs ( 3.79 usr + 0.00 sys = 3.79 CPU)` [download]	[reply] [d/l]


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