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Postings from September 2010
# New Ticket Created by karl williamson # Please include the string: [perl #78024] # in the subject line of all future correspondence about this issue. # <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=78024 > The attached series of commits changes the definitions of the character class macros in handy.h to use table lookup for all those that may require more than one comparison (leaving just isASCII() as not table lookup). Variants of each one are added, with the ones whose names end in _A mean that they match only in the ASCII range, and those ending in _L1 match in the entire Latin1 range. The first two commits are repeats of those in [perl #78022] PATCH: Add a couple of macros to handy.h. The whole series is available at git://github.com/khwilliamson/perl.git branch autodoc. The effect of this patch is both performance and extending capabilities. Now all calls to these are O(1), and there are macros available to use for the /u and proposed /a or similar regular expression modifiers. Previously the macros could have executed many branches to classify the input. Finding an ASCII word character could take 7 comparisons, quite a few more for Latin1.Thread Next