c52f43e72d
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111767 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <functional>
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// class function<R(ArgTypes...)>
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// template <MoveConstructible R, MoveConstructible ... ArgTypes>
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// bool operator==(const function<R(ArgTypes...)>&, nullptr_t);
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//
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// template <MoveConstructible R, MoveConstructible ... ArgTypes>
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// bool operator==(nullptr_t, const function<R(ArgTypes...)>&);
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//
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// template <MoveConstructible R, MoveConstructible ... ArgTypes>
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// bool operator!=(const function<R(ArgTypes...)>&, nullptr_t);
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//
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// template <MoveConstructible R, MoveConstructible ... ArgTypes>
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// bool operator!=(nullptr_t, const function<R(ArgTypes...)>&);
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#include <functional>
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#include <cassert>
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int g(int) {return 0;}
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int main()
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{
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{
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std::function<int(int)> f;
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assert(f == nullptr);
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assert(nullptr == f);
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f = g;
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assert(f != nullptr);
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assert(nullptr != f);
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}
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}
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