NAME

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

Synopsis

constexpr size_type size_bytes() const noexcept;

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 <span>
#include <cstdint>

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

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

See also

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