1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <functional> 11 12 // class function<R(ArgTypes...)> 13 14 // R operator()(ArgTypes... args) const 15 16 #include <functional> 17 #include <cassert> 18 19 // 0 args, return int 20 21 int count = 0; 22 23 int f_int_0() 24 { 25 return 3; 26 } 27 28 struct A_int_0 29 { 30 int operator()() {return 4;} 31 }; 32 33 void 34 test_int_0() 35 { 36 // function 37 { 38 std::function<int ()> r1(f_int_0); 39 assert(r1() == 3); 40 } 41 // function pointer 42 { 43 int (*fp)() = f_int_0; 44 std::function<int ()> r1(fp); 45 assert(r1() == 3); 46 } 47 // functor 48 { 49 A_int_0 a0; 50 std::function<int ()> r1(a0); 51 assert(r1() == 4); 52 } 53 } 54 55 int main() 56 { 57 test_int_0(); 58 } 59
