Joining string lists. Drop the nulls

[Jack]

Probably an easy one for you guys.
I’m trying to join two lists and only keep the values that aren’t null or “”.

Using the A+B drops D. Why? Is there a better way?
Thanks again!

[gilberto.arechigaiba]

Amigo @Jack buenas, you want Joint List, or Join Strings??
Check this out!!

Join Lists

This is also a solution Maybe? [List.SetUnion]

[Draxl_Andreas]

@Jack ,

you can also use boolean operators.

Filter by layers

Hello everyone, how to filter sublist that contains another sublist in a proper order? Elements can only be before and after. Thanks in advance. [Filter by layers] [01]

f.e.

KR

ANdreas

[Jack]

Thanks! List.SetUnion was the solution. So simple

[Jack]

I got excited that it appeared to work, but it put the results out of order. Keep the list structure is vital.

[Hamish]

[Jack]

Thanks Hamish. Transpose,Concat,Flatten. Thats going to be used a lot.

[Daan]

Hi @Jack ,

I think in your first attempt with the Code Block “a+b” does drop the last item since it is (automatically) set to shortest lacing.
If you use the + node, not a code block, and set it to longest lacing it should work.