swift::misc::Optional< T > Class Template Reference

Own implementation of std::optional. More...

Public Member Functions
	Optional () noexcept=default
	Default constructor.
	Optional (T value) noexcept(std::is_nothrow_move_constructible_v< T >)
	Construct from a value.
	Optional (std::nullptr_t) noexcept
	Construct from a nullptr, equivalent to default constructor.
	Optional (const Optional &other) noexcept(std::is_nothrow_copy_constructible_v< T >)
	Copy constructor.
	Optional (Optional &&other) noexcept(std::is_nothrow_move_constructible_v< T >)
	Move constructor.
Optional &	operator= (std::nullptr_t) noexcept
	Assign a nullptr.
Optional &	operator= (const Optional &other) noexcept(std::is_nothrow_copy_constructible_v< T >)
	Copy assignment.
Optional &	operator= (Optional &&other) noexcept(std::is_nothrow_move_constructible_v< T >)
	Move assignment.
	~Optional ()
	Destructor.
	operator bool () const noexcept
	Explicit cast to bool, true if this Optional contains a value.
void	reset () noexcept
	If object is valid, destroy to make it invalid.
T &	operator* ()
	Dereference operator, returns reference to contained value, undefined if there is no value contained.
const T &	operator* () const
	Dereference operator, returns reference to contained value, undefined if there is no value contained.
T *	operator-> ()
	Indirection operator, returns pointer to contained value, undefined if there is no value contained.
const T *	operator-> () const
	Indirection operator, returns pointer to contained value, undefined if there is no value contained.

Detailed Description

template<typename T>
class swift::misc::Optional< T >

Own implementation of std::optional.

Needed to work around lack of C++20 copyable lambda functions.

Definition at line 22 of file optional.h.

---

The documentation for this class was generated from the following file:

• src/misc/optional.h