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 // template<CopyConstructible Fn, CopyConstructible... Types> 13 // unspecified bind(Fn, Types...); 14 // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types> 15 // unspecified bind(Fn, Types...); 16 17 // http://llvm.org/bugs/show_bug.cgi?id=16343 18 19 #include <cmath> 20 #include <functional> 21 #include <cassert> 22 23 struct power 24 { 25 template <typename T> 26 T 27 operator()(T a, T b) 28 { 29 return std::pow(a, b); 30 } 31 }; 32 33 struct plus_one 34 { 35 template <typename T> 36 T 37 operator()(T a) 38 { 39 return a + 1; 40 } 41 }; 42 43 int 44 main() 45 { 46 using std::placeholders::_1; 47 48 auto g = std::bind(power(), 2, _1); 49 assert(g(5) == 32); 50 assert(std::bind(plus_one(), g)(5) == 33); 51 } 52
