Struct identity
Synopsis
#include <src/entt/core/utility.hpp>
struct identity
Description
Identity function object (waiting for C++20).
Mentioned in
- Core Functionalities / Utilities
Methods
| operator() | Returns its argument unchanged. |
Source
Lines 10-24 in src/entt/core/utility.hpp.
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<class Type>
[[nodiscard]] constexpr Type &&operator()(Type &&value) const ENTT_NOEXCEPT {
return std::forward<Type>(value);
}
};