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type traits: removed is_std_hashable[_v]

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This commit is contained in:
Michele Caini
2021-04-12 23:37:30 +02:00
parent e98d8426bb
commit 5c8a1e7d10
2 changed files with 0 additions and 29 deletions
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24
src/entt/core/type_traits.hpp
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@@ -562,30 +562,6 @@ template<typename Type>
inline constexpr auto is_complete_v = is_complete<Type>::value;
/**
* @brief Provides the member constant `value` to true if a given type is
* hashable, false otherwise.
* @tparam Type Potentially hashable type.
*/
template <typename Type, typename = void>
struct is_std_hashable: std::false_type {};
/*! @copydoc is_std_hashable */
template <typename Type>
struct is_std_hashable<Type, std::enable_if_t<std::is_convertible_v<decltype(std::declval<std::hash<Type>>()(std::declval<Type>())), std::size_t>>>
: std::true_type
{};
/**
* @brief Helper variable template.
* @tparam Type Potentially hashable type.
*/
template <typename Type>
inline constexpr auto is_std_hashable_v = is_std_hashable<Type>::value;
/**
* @brief Provides the member constant `value` to true if a given type is empty
* and the empty type optimization is enabled, false otherwise.

5
test/entt/core/type_traits.cpp
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@@ -119,11 +119,6 @@ TEST(TypeTraits, IsComplete) {
static_assert(!entt::is_complete_v<void>);
}
TEST(TypeTraits, IsStdHashable) {
static_assert(entt::is_std_hashable_v<int>);
static_assert(!entt::is_std_hashable_v<not_comparable>);
}
TEST(TypeTraits, ConstnessAs) {
static_assert(std::is_same_v<entt::constness_as_t<int, char>, int>);
static_assert(std::is_same_v<entt::constness_as_t<const int, char>, int>);