Re^3: Strip non-numeric

In this case transliteration is really the most efficient solution though. Consider the results of adding "xlit_$sizes[$_]" => '$_ = $::d[' . $_ . ']; tr/0-9//cd;', to the benchmark:

                Rate   simple_10 multiple_10     xlit_10
simple_10    86400/s          --        -31%        -70%
multiple_10 124615/s         44%          --        -57%
xlit_10     292712/s        239%        135%          --
                Rate   simple_25 multiple_25     xlit_25
simple_25    45324/s          --        -49%        -82%
multiple_25  88062/s         94%          --        -65%
xlit_25     248802/s        449%        183%          --
                Rate   simple_50 multiple_50     xlit_50
simple_50    23823/s          --        -71%        -89%
multiple_50  82566/s        247%          --        -62%
xlit_50     218684/s        818%        165%          --
                 Rate   simple_100 multiple_100     xlit_100
simple_100    13397/s           --         -69%         -92%
multiple_100  43191/s         222%           --         -74%
xlit_100     168434/s        1157%         290%           --
                 Rate   simple_250 multiple_250     xlit_250
simple_250     5608/s           --         -71%         -95%
multiple_250  19639/s         250%           --         -81%
xlit_250     103656/s        1748%         428%           --
                Rate   simple_500 multiple_500     xlit_500
simple_500    2832/s           --         -72%         -95%
multiple_500 10189/s         260%           --         -83%
xlit_500     59072/s        1986%         480%           --
                 Rate   simple_1000 multiple_1000     xlit_1000
simple_1000    1380/s            --          -77%          -96%
multiple_1000  5939/s          330%            --          -83%
xlit_1000     34457/s         2397%          480%            --
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Esp in large data sets, transliteration screams.

Makeshifts last the longest.

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Re: Strip non-numeric by Abigail-II (Bishop) on Jan 14, 2003 at 10:14 UTC
True, but my point was the pattern of `s/PAT//g`, which would benefit to be written as `s/PAT+//g`. `tr` isn't as flexible - not even in this case. `\D` follow the locale and Unicode rules when appropriate, where as the `tr` has the digits hardcoded. Abigail	[reply] [d/l] [select]
Re^5: Strip non-numeric by Aristotle (Chancellor) on Jan 14, 2003 at 10:19 UTC
Ah, I didn't think of Unicode. I briefly considered the locale awareness, but couldn't think of any case where that would change the meaning of `\d`. Makeshifts last the longest.	[reply]
Re: Strip non-numeric by Abigail-II (Bishop) on Jan 14, 2003 at 10:25 UTC
There could be a locale that considers ¼, ½ and ¾ to be numeric. Abigail	[reply]