How do I use mdspan in C++23?

In C++23, the mdspan class provides a simple mechanism for creating multi-dimensional views over contiguous data stored in arrays or similar structures. It allows for flexible access patterns to elements in a multi-dimensional array.

Here's a simple example demonstrating how to use mdspan:

#include <experimental/mdspan> #include <iostream> int main() { // Define a 2D array int data[3][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}}; // Create a mdspan view to access the 2D array std::experimental::mdspan> mspan(data); // Access and print elements using mdspan for(std::size_t i = 0; i < 3; ++i) { for(std::size_t j = 0; j < 4; ++j) { std::cout << mspan(i, j) << " "; } std::cout << std::endl; } return 0; }

C++23 mdspan multi-dimensional arrays data access C++ programming

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