Emacs Lisp Elements

One of the good things to happen in emacs was the inclusion of `seq.el`. It makes easy functional operation over sequences, so no longer need `dash.el` or `cl-lib.el`. (dash still has many more functions inspired by clojure which is awesome when you need them)

But I still wish the emacs community could adopt a modern data structure library. It's difficult to consolidate usage of sequences (lists/vectors) with alists and plists. This would make it so much more accessible.

Thanks for the tip. I'd managed to miss the addition of these. I had somehow noticed the addition of the newer string- functions though, and immediately found them a huge improvement over the mishmash of randomly-named crap that was there before, so I expect seq- to be similarly transformative.

I immediately notice there's seq-filter, which can kill off one of my helper routines. And then (now I'm looking...) I've discovered this was always equivalent to cl-remove-if-not. But I never realised, because of the mystery meat naming conventions.