boost::urls::grammar::string_view_base::rfind Return the position of matching characters Synopsis constexpr size_type rfind( core::string_view str, size_type pos = core::string_view::npos) const noexcept; constexpr size_type rfind( char c, size_type pos = core::string_view::npos) const noexcept; constexpr size_type rfind( char const* s, size_type pos, size_type n) const noexcept; constexpr size_type rfind( char const* s, size_type pos = core::string_view::npos) const noexcept; Description See core::string_view::rfind