# std::mdspan<T,Extents,LayoutPolicy,AccessorPolicy>::size

From cppreference.com
< cpp‎ | container‎ | mdspan

constexpr size_type size() const noexcept; |  | (since C++23)

Returns the number of elements in `mdspan`.

Equivalent to extents().fwd-prod-of-extents(rank()).

If the size of the multidimensional index space extents() is not representable as a value of type `size_type`, the behavior of the program is undefined.

### Parameters

(none)

### Return value

The number of elements

### Example

| This section is incomplete Reason: no example

### See also

| This section is incomplete

Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/container/mdspan/size&oldid=152405"