Boost C++ Libraries

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This is the documentation for a snapshot of the master branch, built from commit b9ab49fc70.
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Global alpha

boost::xpressive::alpha — Matches an alphabetic character.

Synopsis

// In header: <boost/xpressive/regex_primitives.hpp>

unspecified alpha;

Description

The regex traits are used to determine which characters are alphabetic. To match any character that is not alphabetic, use ~alpha.

[Note] Note

alpha is equivalent to /[[:alpha:]]/ in perl. ~alpha is equivalent to /[[:^alpha:]]/ in perl.


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