title: Does Boost provide an implementation of span for C++14?
body: <p><a href="https://en.cppreference.com/w/cpp/header/span" rel="noreferrer"><code>std::span</code></a> was introduced in C++20, but I'm limited to C++14 and, to a lesser extent, to Boost libraries of any version. Is there something similar in Boost?</p>