Snippet

Contiguous Memory Views with Spans

std::span (C++20) is a non-owning view over a contiguous sequence of objects. It allows functions to accept arrays, vectors, or raw pointers interchangeably without copying data or losing size information, significantly improving performance and flexibility.

snippet.cpp

cpp

#include <iostream>
#include <span>
#include <vector>
 
void print_data(std::span<int> view) {
    for (int x : view) {
        std::cout << x << " ";
    }
    std::cout << std::endl;
}
 
int main() {
    int raw_arr[] = {1, 2, 3};
    std::vector<int> vec = {4, 5, 6};
 
    print_data(raw_arr); // Works with raw arrays
    print_data(vec);     // Works with vectors
 
    return 0;
}

Breakdown

void print_data(std::span<int> view)

Accepts a 'view' that can point to any contiguous memory source.

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Contiguous Memory Views with Spans

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