boost::urls::grammar::lut_chars::operator~

Return a new character set which is the complement of another character set.

Synopsis

Declared in <include/boost/url/grammar/lut_chars.hpp>


constexpr
lut_chars
operator~() const noexcept;

This function returns a new character set which contains all of the characters that are not in `*this`.

containing everything but vowels:


constexpr lut_chars not_vowels = ~lut_chars( "AEIOU" "aeiou" );

The new character set.