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Appendix 3: Differences from Boost.Regex

Since many of xpressive's users are likely to be familiar with the Boost.Regex library, I would be remiss if I failed to point out some important differences between xpressive and Boost.Regex. In particular:

Also, in the current implementation, the regex algorithms in xpressive will not detect pathological behavior and abort by throwing an exception. It is up to you to write efficient patterns that do not behave pathologically.


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