So I was trying to implement zipWith, and I came up with þŒDḢ. I'm not sure if it's valid, though, because you have to paste the function at the start.

This has the same problem.

@user The typical way to input black-box functions in Jelly is by the use of Ç and ç

Hint: zipWith is doable in 4 bytes, not using the builtin

@cairdcoinheringaahing Could you give me some more hints? :) I've been scratching my head for half an hour now, and I haven't been able to find any atoms or quicks to help me.

@user Jelly has a zip atom that might help you

@cairdcoinheringaahing Yeah, I saw that, but couldn't figure out how it worked. It seemed to just give its first argument back, so I left it alone.

@user Which zip atom did you use? There's 2 dyads and one monad

I tried "Zip; transpose x with filler y" and "Zip; interleave x and y". The second gave me a 5 byte answer, the first I couldn't get to work.

Oh wait, there's a Z too. (edit: I just tried it, it seems to just return its first argument too)

@user The 4 byte answer uses the second dyad

When I use that, I have to flatten before doing a pairwise reduce.

Is there a way to turn a dyad into a monad operating on a list of two elements, so you can use it with Each?

For example?

@cairdcoinheringaahing Oh wait, is it żç/€?

@user Yep :P

Yay!

@cairdcoinheringaahing Thank you so much!

I think actually, it might be reducible, Imma gonna go play around with it

Yep, looks like there's a 2 byte alternative. Not sure if that counts as a builtin tho

@cairdcoinheringaahing Wow

Because / reduces by columns, this works

Ah, it's like APL's reduce first. What do you do for row-wise reduction?

/€

Ah, that makes sense

Could you just say it's one byte, like with the " answer?

I don't think the " answer is valid

None of the accepted methods for black-box input allow concatenation into the source code, and even so, it fails for anything longer than 1 link

Oh, that's too bad.