std::match

match the grammar object with the start of the specified string

Parameters

If the match is unsuccessful, then n is std::undefined.

std_types::character	matches the start of a string with the character
std_types::set	matches the start of a string with the set's characters
std_types::string	matches the start of the stream with the string

std::match_back	match the grammar object with the end of the specified string
std::search	search from the grammar object from the start or end of the specified string