std::mdspan<T,Extents,LayoutPolicy,AccessorPolicy>::empty

 

C++

Compiler support

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Language

Standard library

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Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

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Diagnostics library

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Strings library

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Technical specifications

Symbols index

External libraries

 

Containers library

Sequence

array (C++11)

vector

vector<bool>

deque

forward_list (C++11)

list

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set

multiset

map

multimap

Unordered associative

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

Adaptors

stack

queue

priority_queue

flat_set (C++23)

flat_multiset (C++23)

flat_map (C++23)

flat_multimap (C++23)

Views

span (C++20)

mdspan (C++23)

Iterator invalidation

Member function table

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std::mdspan

Member functions

mdspan::mdspan (C++23)

mdspan::operator= (C++23)

Element access

mdspan::operator[] (C++23)

Observers

mdspan::size (C++23)

mdspan::empty (C++23)

mdspan::stride (C++23)

mdspan::extents (C++23)

mdspan::data_handle (C++23)

mdspan::mapping (C++23)

mdspan::accessor (C++23)

mdspan::is_uniquemdspan::is_exhaustivemdspan::is_stridedmdspan::is_always_uniquemdspan::is_always_exhaustivemdspan::is_always_strided (C++23)(C++23)(C++23)(C++23)(C++23)(C++23)

Non-member functions

swap (C++23)

Helper types and templates

extentsdextents (C++23)(C++23)

layout_right (C++23)

layout_left (C++23)

layout_stride (C++23)

default_accessor (C++23)

Deduction guides(C++23)

 

[[nodiscard]] constexpr bool empty() const noexcept;		(since C++23)

Check if the mdspan is empty.

Parameters

(none)

Return value

true if the size of the multidimensional index space extents() is ​0​, otherwise false.