That's a very nice... glad to see a way I can Do It All (tm) with one regex. The only problem is it benchmarks about 53% slower than my _w_strings sub. (Also, each one gives very slightly different results with a more complicated test message. ugh.)

Here's how I used your regex in a subroutine:

sub tokenize_msg_w_oneregex {
    my ($msg) = @_;

    my $re =  qr{(?:[^\w\'\$!,.-]+|(?:(?<=\D)[.,])|(?:[.,](?=\D|$)))+}
+;

    my %words = map {$_=>1} split $re, $msg;

    return keys %words;
}

[download]

And here's the cmpthese output:

Benchmark: timing 10000 iterations of Lists, One Regex, Strings...
     Lists:  4 wallclock secs ( 4.15 usr +  0.00 sys =  4.15 CPU) @ 24
+09.64/s (n=10000)
 One Regex:  4 wallclock secs ( 3.56 usr +  0.00 sys =  3.56 CPU) @ 28
+08.99/s (n=10000)
   Strings:  2 wallclock secs ( 2.33 usr +  0.00 sys =  2.33 CPU) @ 42
+91.85/s (n=10000)
            Rate     Lists One Regex   Strings
Lists     2410/s        --      -14%      -44%
One Regex 2809/s       17%        --      -35%
Strings   4292/s       78%       53%        --

[download]

In reply to Re: Re: tokenize plain text messages by revdiablo
in thread tokenize plain text messages by revdiablo

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