std::expected<T,E>::error

constexpr const E& error() const& noexcept;	(1)	(since C++23)
constexpr E& error() & noexcept;	(2)	(since C++23)
constexpr const E&& error() const&& noexcept;	(3)	(since C++23)
constexpr E&& error() && noexcept;	(4)	(since C++23)

Accesses the unexpected value contained in *this.

The behavior is undefined if this->has_value() is true.

Parameters

(none)

Return value

Reference to the unexpected value contained in *this.

Example

This section is incomplete Reason: no example

See also

operator->operator* (C++23)	accesses the expected value (public member function)
value (C++23)	returns the expected value (public member function)
operator boolhas_value (C++23)	checks whether the object contains an expected value (public member function)