topic Re: JSL Question: How to 'flatten" a list of lists in Discussions

JSL Question: How to 'flatten" a list of lists

MathStatChem — Tue, 08 May 2018 02:10:00 GMT

I would like to convert a "list of lists" e.g.

mylist={{"a","b"}, {"c", "d"}, {"e","f", "g"}}

into a simple list with each element from the nested lists e.g.

// desired outcome is this list
flat_list={"a","b","c","d","e","f","g"}

Is there a simple way to do this in JSL?

In general, the nested lists may also contain lists, and the depth of nesting may not be the same for each element in the starting list, e.g.

wild_list={{"a", {"b", "c"}}, {"d"}, {{"e", {"f"}}, "g"}};

gzmorgan0 — Tue, 08 May 2018 17:57:05 GMT

Attached is a script using charcter functions. This can also be done with recursion.

MathStatChem — Tue, 08 May 2018 22:05:58 GMT

Much thanks, very helpful. I like the recursive function, and I will make use of it.

MathStatChem — Fri, 11 May 2018 00:21:06 GMT

With you permission, I'd like to put you script in as a JSL cookbook item. Let me know if that's ok with you.

gzmorgan0 — Fri, 11 May 2018 01:29:07 GMT

Sure, go for it.