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

From cppreference.com
constexpr pointer data ( ) const noexcept ;
(since C++20)

Returns a pointer to the beginning of the sequence.

Return value

A pointer to the beginning of the sequence.

Example

#include <iostream>
#include <span>
 
int main()
{
    constexpr char str[] = "ABCDEF\n";
 
    const std::span sp{str};
 
    for (auto n{sp.size()}; n != 2; --n)
        std::cout << sp.last(n).data();
}

Output:

ABCDEF
BCDEF
CDEF
DEF
EF
F

See also

constructs a span
(public member function)