struct my_string { using this_type = my_string; using value_type = char; using iterator = value_type*; using const_iterator = value_type const*; my_string (); my_string (const_iterator, const_iterator =0); char const* c_str () const { return storage_; } const_iterator begin () const { return storage_; } const_iterator end () const { return storage_ + strlen(storage_); } this_type& operator= (char const*); private: static size_t const size_ = 12; char storage_[size_]; };
boost::cnv::charconv cnv; BOOST_TEST( "12" == convert<my_string>(12, cnv).value()); BOOST_TEST("0.95" == convert<my_string>(0.95, cnv(arg::precision = 2)).value());