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Support lambda expressions in function_input_iterator

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This commit is contained in:
nekko1119
2015-12-28 02:45:49 +09:00
parent 711a0232f8
commit c09c8ca2b2
2 changed files with 22 additions and 4 deletions
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17
test/function_input_iterator_test.cpp
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@ -96,6 +96,23 @@ int main(int argc, char * argv[])
assert(generated[i] == 42 + i);
cout << "function iterator test with stateful function object successful." << endl;
#if !defined(BOOST_NO_CXX11_LAMBDAS) && !defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)
// test the iterator with lambda expressions
int num = 42;
auto lambda_generator = [&num] { return num++; };
vector<int>().swap(generated);
copy(
boost::make_function_input_iterator(lambda_generator, 0),
boost::make_function_input_iterator(lambda_generator, 10),
back_inserter(generated)
);
assert(generated.size() == 10);
for(std::size_t i = 0; i != 10; ++i)
assert(generated[i] == 42 + i);
cout << "function iterator test with lambda expressions successful." << endl;
#endif // BOOST_NO_CXX11_LAMBDAS
return 0;
}