std::span<T,Extent>::size_bytes - cppreference.com (original) (raw)

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

Returns the size of the sequence in bytes.

[edit] Return value

size() * sizeof(element_type).

[edit] Example

#include #include #include   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 );   int main() { // typically, a static span holds only a pointer: std::cout << sizeof(s) << '\n'; }

Possible output:

[edit] See also

| | returns the number of elements in the sequence (public member function) [edit] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |