Template Class Optional< T & >#

Defined in File Optional.h

Nested Relationships#

Nested Types#

Class Documentation#

template<typename T> class Optional<T&>#

Public Types

using value_type = T&#

Public Functions

constexpr Optional() noexcept = default#

inline constexpr Optional(NullOptT) noexcept#

constexpr Optional(const Optional &other) noexcept = default#

constexpr Optional(Optional &&other) noexcept = default#

template<typename U = T> inline explicit(!std::is_convertible_v<U, T>) constexpr Optional(U &&u) noexcept#

template<typename U> inline explicit(!std::is_convertible_v<U, T>) constexpr Optional(const Optional<U> &rhs) noexcept#

constexpr ~Optional() = default#

inline constexpr Optional &operator=(NullOptT) noexcept#

constexpr Optional &operator=(const Optional &rhs) noexcept = default#

constexpr Optional &operator=(Optional &&rhs) noexcept = default#

template<typename U = T> inline constexpr Optional &operator=(U &&u)#

template<typename U> inline constexpr Optional &operator=(const Optional<U> &rhs) noexcept#

inline constexpr const T *operator->() const noexcept#

inline constexpr T *operator->() noexcept#

inline constexpr T &operator*() noexcept#

inline constexpr T &operator*() const noexcept#

inline explicit constexpr operator bool() const noexcept#

inline constexpr bool HasValue() const noexcept#

inline constexpr T &Value()#

inline constexpr const T &Value() const#

template<typename U> inline constexpr T ValueOr(U &&u) const#

template<typename U> inline constexpr Optional &Emplace(U &&u) noexcept#

inline constexpr void Swap(Optional &rhs) noexcept#

inline constexpr void Reset() noexcept#

inline constexpr Optional Take()#

template<typename F, typename Ret = std::remove_cv_t<std::invoke_result_t<F, T&>>> inline constexpr auto Transform(F &&f) &#

template<typename F, typename Ret = std::remove_cv_t<std::invoke_result_t<F, const T&>>> inline constexpr auto Transform(F &&f) const &#

template<typename F, typename Ret = std::remove_cv_t<std::invoke_result_t<F, T>>> inline constexpr auto Transform(F &&f) &&#

template<typename F, typename Ret = std::remove_cv_t<std::invoke_result_t<F, const T>>> inline constexpr auto Transform(F &&f) const &&#

template<typename F> inline constexpr auto AndThen(F &&f) &#

template<typename F> inline constexpr auto AndThen(F &&f) const &#

template<typename F> inline constexpr auto AndThen(F &&f) &&#

template<typename F> inline constexpr auto AndThen(F &&f) const &&#

template<typename F> inline constexpr Optional<T> OrElse(F &&f) const &#

template<typename F> inline constexpr Optional<T> OrElse(F &&f) &&#

template<typename F> inline constexpr T ValueOrElse(F &&f) const &#

template<typename F> inline constexpr T ValueOrElse(F &&f) &&#

template<typename F, typename U> inline constexpr auto TransformOrElse(F &&f, U &&u) const &#

template<typename F, typename U> inline constexpr auto TransformOrElse(F &&f, U &&u) &&#

template<typename F, typename U> inline constexpr U TransformOr(F &&f, U &&u) const &#

template<typename F, typename U> inline constexpr U TransformOr(F &&f, U &&u) &&#