Method operator()

src/ifcparse/IfcParse.cpp:795–795

            : data_(stream),
            upper_(upper) {}
        void operator()(const Blank& /*i*/) { data_ << "$"; }
        void operator()(const Derived& /*i*/) { data_ << "*"; }
        void operator()(const int& i) { data_ << i; }
        void operator()(const bool& i) { data_ << (i ? ".T." : ".F."); }