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std::experimental::optional::value

From cppreference.com
constexpr T& value() &;
constexpr const T & value() const &;
(1) (library fundamentals TS)
constexpr T&& value() &&;
constexpr const T&& value() const &&;
(2) (library fundamentals TS)

Returns the contained value.

1) Equivalent to return bool(*this) ? *val : throw bad_optional_access();
2) Equivalent to return bool(*this) ? std::move(*val) : throw bad_optional_access();

Contents

[edit] Parameters

(none)

[edit] Return value

A reference to the contained value.

[edit] Exceptions

std::experimental::bad_optional_access if *this does not contain a value.

[edit] Notes

The dereference operator operator*() does not check if this optional contains a value, which may be more efficient than value().

[edit] Example

[edit] See also

returns the contained value if available, another value otherwise
(public member function) [edit]
accesses the contained value
(public member function) [edit]