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added support for [](value_type &){} local map lambdas. #135

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added support for [](value_type &){} local map lambdas. #135

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6 changes: 5 additions & 1 deletion include/ygm/container/detail/map_impl.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -326,10 +326,14 @@ class map_impl {
for (std::pair<const key_type, value_type> &kv : m_local_map) {
fn(kv.first, kv.second);
}
} else if constexpr (std::is_invocable<decltype(fn), value_type &>()) {
for (std::pair<const key_type, value_type> &kv : m_local_map) {
fn(kv.second);
}
} else {
static_assert(ygm::detail::always_false<>,
"local map lambda signature must be invocable with (const "
"&key_type, value_type&) signature");
"key_type &, value_type &) or (value_type &) signatures");
}
}

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25 changes: 24 additions & 1 deletion test/test_map.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -224,7 +224,7 @@ int main(int argc, char **argv) {
}

//
// Test for_all
// Test for_all (key-value)
{
ygm::container::map<std::string, std::string> smap1(world);
ygm::container::map<std::string, std::string> smap2(world);
Expand All @@ -242,5 +242,28 @@ int main(int argc, char **argv) {
ASSERT_RELEASE(smap2.count("red") == 1);
}

//
// Test for_all (value)
{
ygm::container::map<std::string, std::string> smap1(world);
ygm::container::map<std::string, std::string> smap2(world);

smap1.async_insert("dog", "cat");
smap1.async_insert("apple", "orange");
smap1.async_insert("red", "green");

smap1.for_all(
[&smap2](const auto &value) { smap2.async_insert(value, value); });

smap1.comm().barrier();

ASSERT_RELEASE(smap2.count("cat") == 1);
ASSERT_RELEASE(smap2.count("orange") == 1);
ASSERT_RELEASE(smap2.count("green") == 1);
ASSERT_RELEASE(smap2.count("dog") == 0);
ASSERT_RELEASE(smap2.count("apple") == 0);
ASSERT_RELEASE(smap2.count("red") == 0);
}

return 0;
}