For those of us who struggled with Swift 1 and 2, something else to remember: the pure Swift reimplementation of Foundation was pretty basic (or non-existent),

For those of us who struggled with Swift 1 and 2, something else to remember: the pure Swift reimplementation of Foundation was pretty basic (or non-existent), so what we used in the early days was basically the ObjC-based NS* frameworks but in a different language - for the most part. Nowadays, it's possible to avoid using Foundation for a lot of basic tasks. This is great news for Linux developers (and eventually Windows developers when Foundation is mature enough) because a lot of basic tasks that once relied on ObjC no longer do.