How to use std::span from C++20

In this article, we&rsquo;ll look at std::span , which has been available since C++20. This &ldquo;view&rdquo; type is more generic than string_view and can help work with arbitrary contiguous collections. Updated in Feb 2025: added section about returning spans and C++26 improvements ( .at() and creatoion from initializer list). A Motivating Example Here&rsquo;s an example that illustrates the…