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From Ville Skyttä (JIRA) <j...@apache.org>
Subject [jira] [Created] (LANG-715) CharSetUtils.squeeze() speedup
Date Sun, 10 Jul 2011 12:32:03 GMT
CharSetUtils.squeeze() speedup
------------------------------

                 Key: LANG-715
                 URL: https://issues.apache.org/jira/browse/LANG-715
             Project: Commons Lang
          Issue Type: Improvement
          Components: lang.*
    Affects Versions: 3.0
            Reporter: Ville Skyttä
            Priority: Minor
         Attachments: squeeze-speedup.patch

The attached patch speeds up CharSetUtils.squeeze() by avoiding unnecessary calls to CharSet.contains().
 It should not slow down any cases, and in my tests with some use cases that I consider fairly
common ones I got up to sixfold speedups with the patch.

It's not that squeeze() would be that slow in the first place before the patch; I just happened
to be playing around with caliper (http://code.google.com/p/caliper/) and squeeze() was one
of the first things I tried it with.

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