boost::urls::grammar::lut_chars::lut_chars boost::urls::grammar::lut_chars::lut_chars Constructor Synopsis Declared in <include/boost/url/grammar/lut_chars.hpp> constexpr lut_chars(char const* s) noexcept; Description This function constructs a character set which has as members, all of the characters present in the null‐terminated string s. constexpr lut_chars digits = "0123456789"; Complexity Linear in ::strlen(s), or constant if s is a constant expression. Exception Safety Throws nothing. Parameters Name Description s A null‐terminated string. Created with MrDocs