Global lower

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

Synopsis

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