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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <functional>
// reference_wrapper
// template <ObjectType T> reference_wrapper<T> ref(reference_wrapper<T>t);
#include <functional>
#include <cassert>
#include "counting_predicates.hpp"
bool is5 ( int i ) { return i == 5; }
template <typename T>
bool call_pred ( T pred ) { return pred(5); }
int main()
{
{
int i = 0;
std::reference_wrapper<int> r1 = std::ref(i);
std::reference_wrapper<int> r2 = std::ref(r1);
assert(&r2.get() == &i);
}
{
unary_counting_predicate<bool(*)(int), int> cp(is5);
assert(!cp(6));
assert(cp.count() == 1);
assert(call_pred(cp));
assert(cp.count() == 1);
assert(call_pred(std::ref(cp)));
assert(cp.count() == 2);
}
}
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