std::as_bytes, std::as_writable_bytes

 

C++

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Technical specifications

Symbols index

External libraries

 

Containers library

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array (C++11)

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unordered_set (C++11)

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stack

queue

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Views

span (C++20)

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std::span

Member functions

span::span

span::operator=

Element access

span::front

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span::data

Iterators

span::beginspan::cbegin (C++23)

span::endspan::cend (C++23)

span::rbeginspan::crbegin (C++23)

span::rendspan::crend (C++23)

Observers

span::empty

span::size

span::size_bytes

Subviews

span::first

span::last

span::subspan

Non-member functions

as_bytesas_writable_bytes

Non-member constant

dynamic_extent

Deduction guides

 

template< class T, std::ptrdiff_t N> std::span<const std::byte, S/* see below */> as_bytes(std::span<T, N> s) noexcept;	(1)
template< class T, std::ptrdiff_t N> std::span<std::byte, S/* see below */> as_writable_bytes(std::span<T, N> s) noexcept;	(2)

Obtains a view to the object representation of the elements of the span s.

If N is std::dynamic_extent, the extent of the returned span S is also std::dynamic_extent; otherwise it is std::ptrdiff_t(sizeof(T)) * N.

as_writable_bytes only participates in overload resolution if std::is_const_v<T> is false.

Return value

1) A span constructed with {reinterpret_cast<const std::byte*>(s.data()), s.size_bytes()}.

2) A span constructed with {reinterpret_cast<std::byte*>(s.data()), s.size_bytes()}.