boost::text::use_replacement_character
// In header: <boost/text/transcode_iterator.hpp> struct use_replacement_character { // public member functions constexpr uint32_t operator()(char const *) const; };
An error handler type that can be used with the converting iterators; provides the Unicode replacement character on errors.
use_replacement_character
constexpr uint32_t operator()(char const *) const;