std::experimental::make_optional

From cppreference.com
 
 
Experimental
Technical Specification
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals TS v2)
Library fundamentals 3 (library fundamentals TS v3)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Extensions for concurrency 2 (concurrency TS v2)
Concepts (concepts TS)
Ranges (ranges TS)
Reflection (reflection TS)
Mathematical special functions (special functions TR)
Experimental Non-TS
Pattern Matching
Linear Algebra
std::execution
Contracts
2D Graphics
 
 
 
Defined in header <experimental/optional>
template< class T >

constexpr optional<typename std::decay<T>::type>

    make_optional( T&& value );
(library fundamentals TS)

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

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

constructs the optional object
(public member function)