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WIP

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This commit is contained in:
Erik Frojdh
2019-08-13 09:16:29 +02:00
parent c2f57f5ab0
commit 6f6ee19906
3 changed files with 25 additions and 3 deletions
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13
slsSupportLib/include/TypeTraits.h
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@ -35,6 +35,19 @@ struct has_str<T, typename std::conditional<
has_str_helper<decltype(std::declval<T>().str())>,
void>::type> : public std::true_type {};
/**
* Has emplace_back method
*/
template <typename T, typename _ = void> struct has_emplace_back : std::false_type {};
template <typename... Ts> struct has_emplace_back_helper {};
template <typename T>
struct has_emplace_back<T, typename std::conditional<
false,
has_emplace_back_helper<decltype(std::declval<T>().emplace_back())>,
void>::type> : public std::true_type {};
/**
* Type trait to evaluate if template parameter is
* complying with a standard container

5
slsSupportLib/tests/test-TypeTraits.cpp
View File

@ -43,4 +43,9 @@ TEST_CASE("sls::is_duration"){
TEST_CASE("initializer list"){
REQUIRE(sls::is_light_container<std::initializer_list<int>>::value == true);
}
TEST_CASE("Check for emplace back"){
//we know vector should have this its the type trait that is tested
REQUIRE(sls::has_emplace_back<std::vector<int>>::value == true);
}