std::make_optional

 

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std::optional

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optional::optional

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optional::operator=

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optional::operator-> optional::operator*

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make_optional

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Defined in header <optional>
template< class T > constexpr optional<typename std::decay<T>::type>     make_optional( T&& value );		(since C++14)

Creates an optional object from value. Effectively calls optional<typename std::decay<T>::type>(std::forward<T>(v))

Parameters

value

-

the value to construct optional object with

Return value

An optional object with value as the contained value.

Exceptions

Throws any exception thrown by the constructor of T.

See also

(constructor)	constructs the optional object (public member function)