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std::polymorphic<T, Allocator>:: valueless_after_move

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C++
Memory management library
( exposition only* )
Allocators
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Memory resources
Uninitialized storage (until C++20)
( until C++20* )
( until C++20* )
( until C++20* )

Garbage collector support (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
(C++11) (until C++23)
std::polymorphic
constexpr bool valueless_after_move ( ) const noexcept ;
(since C++26)

Checks whether * this is valueless.

Return value

true if * this is valueless, otherwise false .

Example

This section is incomplete
Reason: no example