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core: drop entt::identity

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This commit is contained in:
skypjack
2025-11-25 15:29:30 +01:00
parent 9869ab7209
commit 13395a88f1
2 changed files with 0 additions and 26 deletions
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17
src/entt/core/utility.hpp
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@@ -6,23 +6,6 @@
namespace entt {
/*! @brief Identity function object (waiting for C++20). */
struct identity {
/*! @brief Indicates that this is a transparent function object. */
using is_transparent = void;
/**
* @brief Returns its argument unchanged.
* @tparam Type Type of the argument.
* @param value The actual argument.
* @return The submitted value as-is.
*/
template<typename Type>
[[nodiscard]] constexpr Type &&operator()(Type &&value) const noexcept {
return std::forward<Type>(value);
}
};
/**
* @brief Constant utility to disambiguate overloaded members of a class.
* @tparam Type Type of the desired overload.

9
test/entt/core/utility.cpp
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@@ -11,15 +11,6 @@ struct functions {
void bar() {}
};
TEST(Identity, Functionalities) {
const entt::identity identity;
int value = 2;
ASSERT_TRUE(entt::is_transparent_v<entt::identity>);
ASSERT_EQ(identity(value), value);
ASSERT_EQ(&identity(value), &value);
}
TEST(Overload, Functionalities) {
ASSERT_EQ(entt::overload<void(int)>(&functions::foo), static_cast<void (*)(int)>(&functions::foo));
ASSERT_EQ(entt::overload<void()>(&functions::foo), static_cast<void (*)()>(&functions::foo));