std::as_bytes, std::as_writable_bytes - cppreference.com (original) (raw)
| Defined in header | ||
|---|---|---|
| template< class T, std::size_t N > std::span<const std::byte, S/* see below */> as_bytes( std::span<T, N> s ) noexcept; | (1) | (since C++20) |
| template< class T, std::size_t N > std::span<std::byte, S/* see below */> as_writable_bytes( std::span<T, N> s ) noexcept; | (2) | (since C++20) |
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 sizeof(T) * N.
as_writable_bytes only participates in overload resolution if std::is_const_v<T> is false.
[edit] Return value
A span constructed with {reinterpret_cast<const std::byte*>(s.data()), s.size_bytes()}.
A span constructed with {reinterpret_cast<std::byte*>(s.data()), s.size_bytes()}.
[edit] Example
Possible output:
3.14159 = { D8 0F 49 40 } -3.14159 = { D8 0F 49 C0 }