cxx/test/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke_int_0.pass.cpp

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//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // <functional> // class function<R(ArgTypes...)> // R operator()(ArgTypes... args) const #include <functional> #include <cassert> // 0 args, return int int count = 0; int f_int_0() { return 3; } struct A_int_0 { int operator()() {return 4;} }; void test_int_0() { // function { std::function<int ()> r1(f_int_0); assert(r1() == 3); } // function pointer { int (*fp)() = f_int_0; std::function<int ()> r1(fp); assert(r1() == 3); } // functor { A_int_0 a0; std::function<int ()> r1(a0); assert(r1() == 4); } } int main() { test_int_0(); }