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May 2004

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Formal Review Tribool
by Thomas Witt 19 May '04

19 May '04

The review of Douglas Gregor's Tribool library begins now and runs through Saturday, May 29. Here is a short introduction to the library: The 3-state boolean library contains a single class, boost::logic::tribool, along with support functions and operator overloads that implement 3-state boolean logic. The tribool class acts like the built-in bool type, but for 3-state boolean logic. The three states are true, false, and indeterminate, where the first two states are equivalent to those of the C++ bool type and the last state represents an unknown boolean value (that may be true or false, we don't know). When reviewing the library, please remember to include: * What is your evaluation of the design? * What is your evaluation of the implementation? * What is your evaluation of the documentation? * What is your evaluation of the potential usefulness of the library? * Did you try to use the library? With what compiler? Did you have any problems? * How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? * Are you knowledgeable about the problem domain? And finally, every review should answer this question: * Do you think the library should be accepted as a Boost library? Be sure to say this explicitly so that your other comments don't obscure your overall opinion. The library is available in the Boost files area as tribool-20031026.tgz Thank you, Thomas Witt -- Thomas Witt witt(a)acm.org

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regex patches available
by John Maddock 03 May '04

03 May '04

All users of Boost.Regex-1.31.1 should be aware that there are now a set of patches available for this release - see https://sourceforge.net/project/showfiles.php?group_id=7586 for downloads. Issues fixed include: POSIX style regular expressions not behaving correctly with regex_grep. Non-greedy repeats not backtracking correctly in some cases. Backreferences cause some repeat operators to behave incorrectly. Some wide character expressions weren't getting correctly optimised, leading to thrown exceptions in trivial cases. Misc. compiler compatibility fixes. Regards, John Maddock

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