Re: Regex help/condensation

If you store regexps in your hash rather than just the string you might have an easier time:

my %def = ('triangles?' => '?');
s/\s+$//;    # trailing
s/^\s+//;    # leading
s/\s+/ /g;   # multiple spaces to a single space
s/\b$i\b/$def{$i}/gi;
[download]

The \b will make it match on word boundaries.

Updated: fixed stupid mistake...

gav^

Comment on Re: Regex help/condensation Download Code

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Re: Re: Regex help/condensation by Kanji (Parson) on Feb 15, 2002 at 04:43 UTC
I have to admit I'd prolly have used `s/\s+/ /g;`, too, but it's something tr is more suited to and ~~reputedly~~ faster for. `tr/ / /s;` Update: I had the time, so figured 'what the heck' ... `Benchmark: running s, tr, each for at least 5 CPU seconds ... s: 5 wallclock secs ( 5.15 usr + 0.01 sys = 5.16 CPU) @ 54047.31/s (n=278722) tr: 5 wallclock secs ( 5.05 usr + 0.00 sys = 5.05 CPU) @ 130668.19/s (n=659613) Rate s tr s 54047/s -- -59% tr 130668/s 142% --` [download] --k.	[reply] [d/l] [select]

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Re: Re: Regex help/condensation
by Kanji (Parson) on Feb 15, 2002 at 04:43 UTC

I have to admit I'd prolly have used s/\s+/ /g;, too, but it's something tr is more suited to and ~~reputedly~~ faster for.

tr/ / /s;

Update: I had the time, so figured 'what the heck' ...

Benchmark: running s, tr, each for at least 5 CPU seconds ...

         s:  5 wallclock secs ( 5.15 usr +  0.01 sys =  5.16 CPU) 
             @ 54047.31/s (n=278722)

        tr:  5 wallclock secs ( 5.05 usr +  0.00 sys =  5.05 CPU) 
             @ 130668.19/s (n=659613)

       Rate    s   tr
s   54047/s   -- -59%
tr 130668/s 142%   --
[download]

--k.

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