std::span<T,Extent>::size

 

C++

Language

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Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

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Numerics library

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Regular expressions library (C++11)

Atomic operations library (C++11)

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Technical Specifications

 

Containers library

array (C++11)

vector

deque

forward_list (C++11)

list

set

multiset

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multimap

unordered_set (C++11)

unordered_multiset (C++11)

unordered_map (C++11)

unordered_multimap (C++11)

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span (C++20)

 

std::span

Member functions

span::span

span::operator=

Element access

span::front

span::back

span::operator[]

span::data

Iterators

span::beginspan::cbegin

span::endspan::cend

span::rbeginspan::crbegin

span::rendspan::crend

Observers

span::empty

span::size

span::size_bytes

Subviews

span::first

span::last

span::subspan

Non-member functions

as_bytesas_writable_bytes

begin(std::span)end(std::span)

get

Non-member constant

dynamic_extent

Helper classes

tuple_size

tuple_element

Deduction guides

 

constexpr index_type size() const noexcept;

Returns the number of elements in the span.

Return value

The number of elements in the span.

See also

(constructor)	constructs a span (public member function)
size_bytes	returns the size of the sequence in bytes (public member function)