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This is the documentation for a snapshot of the develop branch, built from commit ce8b1727c4.

Global lower

boost::xpressive::lower — Matches a lower-case character.


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

unspecified lower;


The regex traits are used to determine which characters are lower-case. To match any character that is not a lower-case character, use ~lower.

[Note] Note

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