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miles
miles
12:42 PM
@Dennis I've implemented and made a pull request for a key quick using ƙ based on J's key adverb.
 
 
4 hours later…
Dennis
Dennis
4:46 PM
@miles That's essentially group-by, yes? I kept forgetting to add that. :)
Well, not quite, but similar.
 
miles
miles
5:01 PM
yeah, and you could already use monad group Ġ to make something similar. This just makes it shorter and easier if you need to apply an operation to the groups, and if you are using a separate list to select your groups
 
Erik the Outgolfer
Erik the Outgolfer
5:27 PM
@Dennis
if Ẹ returns 0 for [0, 0, [], 0] then Ạ returning 1 for [0, 0, [], 0] may be a problem...wait it got fixed?
(btw I don't think it has been pulled to tio yet)
 
Dennis
Dennis
Ạ never returned 1 for [0, 0, [], 0].
 
Erik the Outgolfer
Erik the Outgolfer
umm, huh?
 
Dennis
Dennis
Sorry, 1.
 
Erik the Outgolfer
Erik the Outgolfer
sorry
[“”,1,2]Ȧ returning 1
is this a problem?
 
Dennis
Dennis
No, this is expected behavior.
31
Q: Is it true? Ask Jelly!

DennisBackground Inspired by Octave's (and, by extension, MATL's) very convenient interpretation of truthy/falsy matrices, Jelly got the Ȧ (Octave-style all) atom. Ȧ takes an array as input and returns 1 if the array is non-empty and does not contain the number 0 (integer, float, or complex) anywhere...

code-golf string array-manipulation decision-problem
 
Erik the Outgolfer
Erik the Outgolfer
5:34 PM
that's where I read about that weird behavior
it's not exactly the same as ẸȧẠ
 
Dennis
Dennis
Why would it be?
 
Erik the Outgolfer
Erik the Outgolfer
at least I think clarifying the docs would be better
it's really "z doesn't contain 0 and is non-empty."
 
Dennis
Dennis
Not quite. The empty array returns 0.
@EriktheOutgolfer What does it say now?
 
Erik the Outgolfer
Erik the Outgolfer
> Any and all; return 0 if z is empty or contains a falsey value, else 1.
where I take [] to be such a "falsey value"
but [[0]]Ȧ returns 0
so maybe it should instead say
> Any and all; return 0 if z is empty, or contains a falsey value when flattened, else 1.
or even
> Any and all; return 0 if z is empty, or contains 0 when flattened, else 1.
 
Dennis
Dennis
Feel free to change it to whatever you consider better.
 
Erik the Outgolfer
Erik the Outgolfer
5:40 PM
yeah I'll also add Ẹ
 
Dennis
Dennis
@EriktheOutgolfer Corrected.
 
Erik the Outgolfer
Erik the Outgolfer
heh
oh Ẹ is already added to the docs
@Dennis done
and yes the punctuation there is important
 
Erik the Outgolfer
Erik the Outgolfer
6:27 PM
@miles how does the new quick "key" behave?
 
Mr. Xcoder
Mr. Xcoder
I believe it is groups the equal elements and applies a monad to them
Like this: Try it online!
If it has other functions, please give us some clarifications (cc @miles)
 
Erik the Outgolfer
Erik the Outgolfer
 
miles
miles
6:43 PM
that's pretty much it xcoder
 
Mr. Xcoder
Mr. Xcoder
@miles What is the explanation for the weird behaviour pointed out by erik?
 
miles
miles
the quick transforms a monad into a dyad that groups the rhs based on the lhs, and applies the monad to each group
it doesnt take a nilad so I have no idea what that output represents
 
Mr. Xcoder
Mr. Xcoder
oh ok
BTW Please ping
 
miles
miles
continuing, if the lhs has less items then the rhs, the remaining items on the rhs are grouped together
also, if given an integer, it converts it to its digits and operates on that instead
for example, Lƙ` is a monad that computes the frequency of each unique char, sorted by first appearance (link)
 
Mr. Xcoder
Mr. Xcoder
Nice
 
miles
miles
7:16 PM
@Mr.Xcoder The original motivation was from this challenge, and it includes another example usage for the key quick
 

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