// Copyright (C) 2009-2012 Lorenzo Caminiti // Distributed under the Boost Software License, Version 1.0 // (see accompanying file LICENSE_1_0.txt or a copy at // http://www.boost.org/LICENSE_1_0.txt) // Home at http://www.boost.org/libs/local_function #include #include #include //[expensive_copy_local_function struct n { int i; n(int _i): i(_i) {} n(n const& x): i(x.i) { // Some time consuming copy. for (unsigned i = 0; i < 10000; ++i) std::cout << '.'; } }; int main(void) { n x(-1); void BOOST_LOCAL_FUNCTION(const bind& x) { // OK: No copy assert( x.i == -1 ); // and constant. } BOOST_LOCAL_FUNCTION_NAME(f) f(); return 0; } //]