RE: dash.el [was: Re: Imports / inclusion of s.el into Emacs]

[Drew Adams]

> The point was that until very recently (27.1)
> there was no flatten function, which is
> something almost every language has.
            ^^^^^^^^^^^^

Elisp survived for 35 years without a
predefined `flatten'?  And Common Lisp
still doesn't have it?  How come?

I'd say that `flatten' is something
"almost every" Lisp user learns to
write early on, at least as a simple
recursive function.  Good exercise.

I don't think it's a crying need that
`flatten' be predefined.  But OK, fine,
getting the leaves of a tree can be
useful.  Sometimes you need something
like that; mostly you don't.
___

Google/duck-duck: "flatten list lisp".

https://stackoverflow.com/questions/10465096/flatten-nests-function-in-lisp-need-help-understanding

http://lee-mac.com/flatten.html

https://coderwall.com/p/7uecya/flatten-a-multi-dimensional-list-in-lisp