NAME¶

std::span::size_bytes - std::span::size_bytes

Synopsis¶

constexpr size_type size_bytes() const noexcept; (since C++20)

Returns the size of the sequence in bytes.

Parameters¶

(none)

Return value¶

The size of the sequence in bytes, i.e., size() * sizeof(element_type).

Example¶

// Run this code

#include <cstdint>
#include <span>

int main()
{
constexpr static std::int32_t a[]{1, 2, 3, 4, 5};
constexpr static std::span s{a};

static_assert
(
sizeof(int32_t) == 4 &&
std::size(a) == 5 &&
sizeof a == 20 &&
s.size() == 5 &&
s.size_bytes() == 20
);
}

See also¶

size returns the number of elements in the sequence
(C++20) (public member function)