Table of Contents

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

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

#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)

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