cxx/test/algorithms/alg.nonmodifying/alg.foreach/test.pass.cpp

40 lines
1.1 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// <algorithm>
// template<InputIterator Iter, Callable<auto, Iter::reference> Function>
// requires CopyConstructible<Function>
// Function
// for_each(Iter first, Iter last, Function f);
#include <algorithm>
#include <cassert>
#include "../../../iterators.h"
struct for_each_test
{
for_each_test(int c) : count(c) {}
int count;
void operator()(int& i) {++i; ++count;}
};
int main()
{
int ia[] = {0, 1, 2, 3, 4, 5};
const unsigned s = sizeof(ia)/sizeof(ia[0]);
for_each_test f = std::for_each(input_iterator<int*>(ia),
input_iterator<int*>(ia+s),
for_each_test(0));
assert(f.count == s);
for (unsigned i = 0; i < s; ++i)
assert(ia[i] == i+1);
}