std::hash<std::indirect>

 

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std::indirect

Member functions

indirect::indirect

indirect::~indirect

indirect::operator=

Observers

indirect::operator->indirect::operator*

indirect::valueless_after_move

indirect::get_allocator

Modifiers

indirect::swap

Non-member functions

operator==operator<=>

swap(std::indirect)

Deduction guides

Helper classes

hash<std::indirect>

 

Defined in header <memory>
template< class T, class Allocator > struct hash<std::indirect<T, Allocator>>;		(since C++26)

The partial specialization of std::hash for std::indirect allows users to obtain hashes of the objects owned by indirect objects.

The specialization std::hash<std::indirect<T, Allocator>> is enabled if std::hash<T> is enabled, and is disabled otherwise.

When enabled, for an object obj of type std::indirect<T, Allocator>, std::hash<std::indirect<T, Allocator>>()(obj) evaluates to:

• std::hash<T>()(*obj), if obj is not valueless.
• An implementation-defined value, if obj is valueless.

The member functions of this specialization are not guaranteed to be noexcept because the hash of T might throw.

See also

hash (C++11)

hash function object (class template)