##### cppreference.com

##### Search

Create account

##### Namespaces

- Page
- Discussion

##### Variants

##### Views

- View
- Edit
- History

##### Actions

# std::pmr::memory_resource::do_is_equal

From cppreference.com
< cpp‎ | memory‎ | memory resource

virtual bool is_equal(const std::pmr::memory_resource& other) const = 0; |  | (since C++17)

Compares `*this` for equality with `other`.

Two `memory_resource`s compare equal if and only if memory allocated from one `memory_resource` can be deallocated from the other and vice versa.

### [edit] Notes

The most-derived type of `other` may not match the most derived type of `*this`. A derived class implementation therefore must typically check whether the most derived types of `*this` and `other` match using dynamic_cast, and immediately return `false` if the cast fails.

### [edit] Exceptions

`noexcept` specification:
noexcept

### [edit] See also

is_equal | compare for equality with another `memory_resource` (public member function) [edit]

Retrieved from "http://en.cppreference.com/mwiki/index.php?title=cpp/memory/memory_resource/do_is_equal&oldid=91391"
Category:

- unconditionally noexcept

Hidden categories:

- Pages with unreviewed unconditional noexcept template
- Pages with unreviewed noexcept template