This might be a pretty simple question, but how to I apply an atom to every item in a list? For example, if I would like to get the length of each string in a list. I tried this but that returns the number of strings

@miles That sounds interesting.

@DJMcMayhem € (each) is the map-quick. L€ does the job here.

Ah, so that's what quicks are for!

Thanks

np

Btw, feel free to ping me if you have questions.

Ok. One more question. What does L€ return? Can it be used in a chain?

L€ is like map(len,...) in Python. It returns an array of lengths.

And then that new array is a chain in the link?

No, a chain is a list of instructions. The return values don't form part of it.

yeah, I understand that. I think maybe I'm just missing some of the terminology

What are you trying to do with the lengths array?

I was gonna try to answer helka's newest challenge in jelly, but I got beaten to it.

I'll probably still try to figure it out on my own, just for the experience

OK

I have an idea for a powerful pair of quicks, I think: “minimals” and “maximals”. Given a list of strings, LÐṀ keeps the ones that have maximal length.

Essentially, ÇÐṀ is Ç€M$ị$ is lambda z: [x for x in z if Ç(x) == max(map(Ç, z))].

And ÐṂ would work similarly. I’m going to implement them

@Dennis Pull request!

@Lynn Looks good. I'll accept it as soon as I get home.

I went and wrote a bunch of number theory things too. See if you like them

@Lynn Merged both. Thanks!

Thank you, too~

AttributeError: module 'sympy.ntheory.factor_' has no attribute 'divisor_sigma'

Looks like my SymPy needs updating.

That’s possible, yeah. I have 1.0.0 (or was it 1.0?)

carmichael is actually in sympy version 1.0.1-dev (as reduced_totient), but that’s hard to get right now, so I just reimplemented it

Added to the wiki.