« first day (2475 days earlier)      last day (2354 days later) » 
00:00 - 14:0014:00 - 18:0018:00 - 00:00

HyperNeutrino
HyperNeutrino
6:00 PM
because in JS you can do dumb things like +[] for 0
 
caird coinheringaahing
caird coinheringaahing
There's Symbolic Python which doesn't use any alphanumeric characters
 
Riker
Riker
@HyperNeutrino that is true
@HyperNeutrino so you're allowed ~[]()01 then
implicit printing at the end of course
 
HyperNeutrino
HyperNeutrino
but then it's no longer a subset of Python
 
Riker
Riker
CMC: shortest snippets that return the positive integers 1-10 (10 snippets), using only ~0-1
those digits
@HyperNeutrino hm true
 
HyperNeutrino
HyperNeutrino
JSFuck is valid JavaScript
@Riker 1, -~1, -~-~1, -~-~-~1, etc
 
Uriel
Uriel
6:03 PM
@Riker pretty trivial.
@HyperNeutrino and lastly 10
 
Mr. Xcoder
Mr. Xcoder
@HyperNeutrino They might not be the shortest.
 
Riker
Riker
also, cool thing of the day: you can hit opt-number, and then a letter, to repeat that letter in the python REPL <number> times
i.e. opt-1-3 (hit opt-1, then release both and hit 3)
 
HyperNeutrino
HyperNeutrino
1: 1
2: -~1
3: 1-~1
4: -~1-~1
5: 1-~1-~1
6: -~1-~1-~1
etc
 
Riker
Riker
then a, prints 13 a's
 
HyperNeutrino
HyperNeutrino
anyway gtg o/
 
Riker
Riker
6:05 PM
o/
 
Mr. Xcoder
Mr. Xcoder
10: 10, 9: 10-1, 8: ~~10-1-1 (this can be shorter)
CMC: Output 3 only using [><]
 
Riker
Riker
js? or brainfuck
 
Mr. Xcoder
Mr. Xcoder
Python, JS, Brainfuck, anything.
 
Riker
Riker
can I use +?
 
Mr. Xcoder
Mr. Xcoder
No.
I don't even know if it possible.
 
Riker
Riker
6:11 PM
don't think so
 
Mr. Xcoder
Mr. Xcoder
(in python). I can output 2, but 3...
 
Riker
Riker
how'd you get 2?
 
Mr. Xcoder
Mr. Xcoder
@Riker Python: [[]<[[]]][[]<[]]<<[[]<[[]]][[]<[]]
 
Riker
Riker
oh, I frogot about bit shiftnig
 
HyperNeutrino
HyperNeutrino
oh right shifts
LOL
how do you get 3 o_O
 
Mr. Xcoder
Mr. Xcoder
6:14 PM
Ok, so final rephrase: Output 4 only using [<]
@HyperNeutrino You can't.
 
HyperNeutrino
HyperNeutrino
lol
@Mr.Xcoder [[]<[[]]][[]<[]]<<[[]<[[]]][[]<[]]<<[[]<[[]]][[]<[]]
just yours copied an extra time :D
 
Riker
Riker
also interesting if we can use ()
makes it possible to get anything I think, in JS at least
 
Mr. Xcoder
Mr. Xcoder
@Riker No you cannot. You can work that out with [...][[]<[]]. At least in Python (x) is like [x][[]<[]]
 
Riker
Riker
@Mr.Xcoder I know, but for the sake of getting non-exponents of 2
I'm using JS
 
Mr. Xcoder
Mr. Xcoder
( ͡° ͜ʖ ͡°) Ok I'll allow it
 
HyperNeutrino
HyperNeutrino
6:16 PM
@Mr.Xcoder actually [x][[]<[]]
 
Riker
Riker
@Mr.Xcoder wut, why the lenny
 
Mr. Xcoder
Mr. Xcoder
@Riker Cuz I changed the rules a thousand times
 
Riker
Riker
lol
 
Mr. Xcoder
Mr. Xcoder
anyway brb
 
NieDzejkob
NieDzejkob
Huh? Why is my trivial solution to the dupes-in-a-list CMC starred?
 
HyperNeutrino
HyperNeutrino
6:18 PM
because people don't know what stars mean ಠ_ಠ /s
 
Adám
Adám
Announcement: An event is starting in 12 minutes in APL - "APL learning session"
 
Mr. Xcoder
Mr. Xcoder
@NieDzejkob Because you ninja'd Thomas Ward presumably
 
New Main Posts
New Main Posts
0
Q: Carve a square from a string

PavelYour challenge today is to take a multiline string, and output the biggest square contained within the string that includes the top left corner. A square string is one where: Each line has the same number of characters The number of characters on each line is equal to the number of lines. C...

code-golf string
 
HyperNeutrino
HyperNeutrino
6:31 PM
@NewMainPosts why is this so hard in jelly ._.
 
Mr. Xcoder
Mr. Xcoder
@HyperNeutrino Hard?
 
HyperNeutrino
HyperNeutrino
or at least I tried like 50 different things and all of them do absolutely nothing to the input
got it but it's so long
 
Pavel
Pavel
@HyperNeutrino he he he
 
HyperNeutrino
HyperNeutrino
why strict IO format ;-;
I mean it only adds 2 bytes but still
Pyth beats Jelly!
(waits for Dennis)
 
Mr. Xcoder
Mr. Xcoder
I think the I/O is not that cumberstone
 
HyperNeutrino
HyperNeutrino
6:36 PM
I mean it's just <split><newchain> but still
 
Pavel
Pavel
Not all solutions will need to do split, so you shouldn't get it for free.
 
HyperNeutrino
HyperNeutrino
i guess
I mean Pyth just reads all STDIN ;-;
 
Pavel
Pavel
@HyperNeutrino @Dennis we need your Jelly wizardry
 
HyperNeutrino
HyperNeutrino
;-; I intentionally didn't ping him because if he's busy I don't want to bother him but oh well you pinged him so ¯\_(ツ)_/¯
 
Mr. Xcoder
Mr. Xcoder
16061 palindrome again :D
 
Pavel
Pavel
6:40 PM
eh?
 
Mr. Xcoder
Mr. Xcoder
@Pavel My reputation
 
Pavel
Pavel
 
Mr. Xcoder
Mr. Xcoder
@Pavel What should the result be for: 
a c
def
ghi
 
Pavel
Pavel
@Mr.Xcoder Same as the input
 
Riker
Riker
pet peeve: sites that have stupid lists, with like 4 paragraphs per page, and then you need to click next (which loads a whole new page, doesn't just unhide a div) to view the next 4, and every third page is actually an advert
 
Pavel
Pavel
6:54 PM
@Riker It's almost like loading the page multiple times allows them to to get paid by advertisers more times for one visit.
 
Riker
Riker
.. I never realized that
 
Pavel
Pavel
You're right, annoying af.
 
Riker
Riker
I mean I have ublock on it's not like I see any of them
 
Pavel
Pavel
Proposed compromise to websites: You don't show me ads, but you get to run a script that mines bitcoin or something instead.
 
Riker
Riker
honestly, I could probably deal with that on something like wikipedia
 
NieDzejkob
NieDzejkob
6:56 PM
@Pavel this has been tried before
 
Riker
Riker
opt-in to use my computer (a set portion, unlimited access is just dumb) to mine bitcoin or smth for it
 
Pavel
Pavel
@NieDzejkob I know. I like it.
 
Riker
Riker
@NieDzejkob where? I'm curious
 
Pavel
Pavel
@Riker The Scandenavia and the World webcomic.
Other places too, but that's one example.
 
Riker
Riker
I feel like finland would do that
they have public hot tubs iirc
 
NieDzejkob
NieDzejkob
6:57 PM
 
Pavel
Pavel
A few places already do it but they don't tell you, and that's just nasty.
@Riker Saunas
 
Riker
Riker
@NieDzejkob I did do that
I was wondering if any major site did that
 
NieDzejkob
NieDzejkob
TPB tried
 
Riker
Riker
all I got off of that search was hijacking browsers, I was looking for actually legit ones
 
NieDzejkob
NieDzejkob
but they didn't turn off ads, so people got pissed
 
HyperNeutrino
HyperNeutrino
6:59 PM
Idea: Use people's idle computing power to run parallelized computation and make a major website do parallel computing
my hackathon team tried that in my first hackathon (internet one like 2 years ago) but it didn't work very well xD
 
NieDzejkob
NieDzejkob
make it optin or mobile device users will H A T E you
 
HyperNeutrino
HyperNeutrino
yes :P
if google did that they could probably get places because of how many people use google
 
muddyfish
muddyfish
Isn't that just SETI at home?
 
NieDzejkob
NieDzejkob
BOINC is the term you want
 
Pavel
Pavel
@muddyfish SETI? How do you Search for ExtraTerrestrial Intelligence at home?
 
muddyfish
muddyfish
7:04 PM
 
Pavel
Pavel
@xnor 10/10 testcase invalidated 3 answers — Pavel 1 min ago
 
Riker
Riker
@Pavel stare really hard into the sky
 
Pavel
Pavel
@muddyfish Cool
 
HyperNeutrino
HyperNeutrino
@Mr.Xcoder Fixed for that test case for 0 byte difference :D
 
Pavel
Pavel
Poll: Would the carve a square challenge be more intresting if spaces were considered holes that shouldn't be part of the square?
(Not that I'd change the rules on that)
 
DJMcMayhem
DJMcMayhem
7:09 PM
Python question: Can I redefine an class from an imported namespace?
Something like... 
import foo

class foo.Bar(foo.bar):
    ...
 
Thomas Ward
Thomas Ward
@DJMcMayhem sortof.
take a look at my imaplibext library
 
Pavel
Pavel
λ  python
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> class foo:
...     pass
...
>>> class bar:
...     pass
...
>>> foo
<class '__main__.foo'>
>>> foo = bar
>>> foo
<class '__main__.bar'>
>>>
@DJMcMayhem ^
 
Thomas Ward
Thomas Ward
 
Pavel
Pavel
You can define a class and assign it to the name of the imported class.
 
Thomas Ward
Thomas Ward
@DJMcMayhem you'll see that I import imaplib.IMAP4 and redeclare the class as class IMAP4(imaplib.IMAP4): ...
yep
 
DJMcMayhem
DJMcMayhem
7:10 PM
@Pavel That's... Not what I want. foo.bar must specifically be imported from foo
 
Thomas Ward
Thomas Ward
@DJMcMayhem you can't redefine foo.bar
 
Pavel
Pavel
@DJMcMayhem Sure, foo.bar = new_class
 
Thomas Ward
Thomas Ward
classes can't have . in them
 
Pavel
Pavel
@ThomasWard Namespace foo, class bar
 
HyperNeutrino
HyperNeutrino
You can't do exactly what you wanted but Pavel offers an equivalent method
 
Thomas Ward
Thomas Ward
7:11 PM
@Pavel if foo exists already and he wants to redefine bar he needs to have a new namespace and class
and then import that new namespace as foo
then he'd have foo.bar
 
Pavel
Pavel
no?
 
DJMcMayhem
DJMcMayhem
OK, let me be a little more specific
just a sec, typing it out
 
Thomas Ward
Thomas Ward
@DJMcMayhem ambiguity is evil :P
 
DJMcMayhem
DJMcMayhem
class bar():
    def __init__(self, a):
        self.a = a


class bar(bar):
    def __init__(self, a, b):
        super(bar, self).__init__(a)
        self.b = b

a = bar(1, 2)
print(a.a, a.b)
This ^ works.
However, in my case, the original definition of bar is in foo.py
 
Pavel
Pavel
@DJMcMayhem Sure, it would work.
 
Thomas Ward
Thomas Ward
7:14 PM
@DJMcMayhem then...
 
DJMcMayhem
DJMcMayhem
I can do class bar(foo.bar), but that creates a new class in the local namespace, not in foo
 
Pavel
Pavel
@DJMcMayhem Right, so you do foo.bar = bar afterwards.
 
DJMcMayhem
DJMcMayhem
Oh
 
Pavel
Pavel
I think
 
DJMcMayhem
DJMcMayhem
Well that's surprisingly simple
If it works, just a sec
 
Pavel
Pavel
7:15 PM
I haven't tried that but it should work.
 
Thomas Ward
Thomas Ward
and if it doesn't then you have a small problem of having to do additional redefinitions.
 
DJMcMayhem
DJMcMayhem
@Pavel That works perfectly
Thanks a bajillion
 
Pavel
Pavel
Awesome
Np
@ThomasWard I was more concerned about the possibility of the class suddenly extending itself
 
HyperNeutrino
HyperNeutrino
I just realized that modules are just normal objects
 
Pavel
Pavel
@HyperNeutrino Yep.
 
DJMcMayhem
DJMcMayhem
7:16 PM
Actually, it might be even simpler than that because I could do from foo import *
 
Pavel
Pavel
@DJMcMayhem That would also work.
 
Thomas Ward
Thomas Ward
@Pavel Well, they each handle their own, I can actually do import imaplibext as imaplib and maintain reverse compatibility with imaplib for the most part. While having imaplibext properly reference imaplib so...
 
DJMcMayhem
DJMcMayhem
@Pavel Yeah, I'm amazed that super and inheritance is smart enough to let a class inherit from itself, but keep the original around long enough that you can redefine it's constructor while still referencing the original one
 
Thomas Ward
Thomas Ward
caveat emptor
 
HyperNeutrino
HyperNeutrino
CMC: Prove that f:Z->Z is a bijection (the function is a link)
or prove that it isn't
Really you only need to prove that it's surjective because it's obviously injective by definition
oh wait f(1234567890) doesn't exist
 
Mr. Xcoder
Mr. Xcoder
7:21 PM
ಠ_ಠ Because of PPCG I suffer of the What-does-my-code-do? syndrome.
 
Thomas Ward
Thomas Ward
lol
 
HyperNeutrino
HyperNeutrino
@Mr.Xcoder oh I have that and I'd like to blame it on PPCG but really it's just because I write spaghetti code :D
 
Mr. Xcoder
Mr. Xcoder
@HyperNeutrino have time for a bit of JHT?
 
HyperNeutrino
HyperNeutrino
lol in like 3-4 minutes class is almost over and then I'm going to CS club
 
Ian Gödel
Ian Gödel
Hi. Does anyone here know Pyth, I am stuck on something.
 
Mr. Xcoder
Mr. Xcoder
7:26 PM
@IanGödel Just ask, I might be able to help
 
Ian Gödel
Ian Gödel
Ok, I want to rotate an array given as input to the left by 1 place, but I get weird results with .<1
 
Mr. Xcoder
Mr. Xcoder
.< takes the list first, then the number. You'd need .<Q1.
 
Ian Gödel
Ian Gödel
@Mr.Xcoder Thanks!!! But just curious, why did I get [2, 4, 8, 32, 64] with .<1
 
Mr. Xcoder
Mr. Xcoder
@IanGödel What input did you have? I assume [1, 2, 3, 4, 5, 6]
 
Ian Gödel
Ian Gödel
@Mr.Xcoder [1,2,3,5,6] in fact
 
Mr. Xcoder
Mr. Xcoder
7:31 PM
Oh yeah. Because .< #integer# #integer# is bit shift. And .< #integer# #list# vectorizes bit shift.
 
Ian Gödel
Ian Gödel
@Mr.Xcoder Like << in C?
 
Mr. Xcoder
Mr. Xcoder
Presumably, yeah.
 
Ian Gödel
Ian Gödel
Great thank you
 
Mr. Xcoder
Mr. Xcoder
np
 
Marcus Andrews
Marcus Andrews
8:30 PM
is there a quicker way to map a base conversion to new chars?
puts gets.to_i.to_s(4).split("").map{|x|['FE','FI','FO','FUM'][x.to_i]}.join("")
this is as far as I got with Ruby
takes the incoming int, converts it to base 4, replaces the numbers with words
 
Marcus Andrews
Marcus Andrews
8:47 PM
hmm, is *"" the same as .join("")?
 
HyperNeutrino
HyperNeutrino
@MarcusAndrews In Python?
 
Marcus Andrews
Marcus Andrews
ruby
 
HyperNeutrino
HyperNeutrino
ok
 
Pavel
Pavel
@MarcusAndrews yes
 
caird coinheringaahing
caird coinheringaahing
9:06 PM
TFW you can do something in /// but not Python
 
DJMcMayhem
DJMcMayhem
What is the task?
 
Marcus Andrews
Marcus Andrews
I was working on something that converts a number to base 4 and remaps the numbers to words
 
caird coinheringaahing
caird coinheringaahing
9:23 PM
@DJMcMayhem Given a flat array and a list of depths, reconstruct the nested array
 
Marcus Andrews
Marcus Andrews
9:36 PM
so, why the nineteenth byte
nvm apparently there's an explanation for it on other pages XD
 
orlp
orlp
@cairdcoinheringaahing what makes you think you can't do that in Python?
@Mego I didn't know you were married
 
caird coinheringaahing
caird coinheringaahing
@orlp It took me ages to figure out, before caving and using regex and eval. The aim was to do it with array construction though, and I failed :(
 
New Main Posts
New Main Posts
9:54 PM
0
Q: Expand a number

Galen IvanovExpand a number Your task is to expand an integer greater than 0 in the following manner: Split the number into decimal digits and for each digit generate a list according to these rules: if the digit is odd, the list starts with the digit and goes down to 1; if the digit is even, the list st...

code-golf number
 
Adám
Adám
10:22 PM
 
New Main Posts
New Main Posts
0
Q: Alphabet Staircase

SpookyGengarThe Challenge Your task is to create a program where it outputs the following with no input: a bb ccc dddd eeeee ffffff ggggggg hhhhhhhh iiiiiiiii jjjjjjjjjj kkkkkkkkkkk llllllllllll mmmmmmmmmmmmm nnnnnnnnnnnnnn ooooooooooooooo pppppppppppppppp qqqqqqqqqqqqqqqqq rrrrrrrrrrrrrrrrrr sssssssssssss...

code-golf string alphabet
 
caird coinheringaahing
caird coinheringaahing
@Adám Not yet (hopefully though)
 
Adám
Adám
@cairdcoinheringaahing :-) It is a straw poll; click to "vote".
 
New Meta Posts
New Meta Posts
10:44 PM
0
Q: Should I edit a challenge to make it more intresting, if it makes several existing answers no longer optimal?

PavelSpecifially This one. Dennis pointed out that the rule that input cannot be an array of lines makes the challenge worse, and I agree with him now. However, the challenge already has several answers, and most of them would become sub-optimal since taking input as a string array would likely be sh...

discussion asking-questions specific-question
 
Adám
Adám
CMC: Given y find an x such that tan(x⁻ˣ) = y. E.g. y = 2.1 → x = 0.8725.
 
Eric Tressler
Eric Tressler
what's inside tan()
is that meant to be x^x?
 
HyperNeutrino
HyperNeutrino
that is xroot(x) I think
 
Adám
Adám
tan(x^-x)
 
Destructible Lemon
Destructible Lemon
@Adám shouldn't the arrow be the other way round or something since y is the input?
 
Adám
Adám
10:52 PM
@DestructibleLemon Yes, thanks. Fixed.
 
caird coinheringaahing
caird coinheringaahing
Interesting question: When browsing answers, is there a type of answer which (assuming it's correct) you always upvote? Such as answers in a given language, answers of a certain code length etc.
 
Eric Tressler
Eric Tressler
@cairdcoinheringaahing anything that mentions the secret word
 
caird coinheringaahing
caird coinheringaahing
I always upvote answers in a) my languages or b) languages that I'm learning, if they have an explanation
@EricTressler I'm torn between taking the bait or not :P
 
Adám
Adám
@cairdcoinheringaahing Probably not always, but I tend to upvote answers that use language features in innovative ways, use non-obvious algorithms, or use "languages" for non-intended purposes.
 
Uriel
Uriel
@Adám something tells me there is one language you'd always consider innovative ;P
 
Destructible Lemon
Destructible Lemon
11:03 PM
@cairdcoinheringaahing am i missing something?
 
Uriel
Uriel

 talk.tryitonline.net

For general discussion and feature requests regarding tryitonl...
1
 
Adám
Adám
Dyalog APL solution to my CMC: (3○*∘-⍨)⍣¯1
 
Eric Tressler
Eric Tressler
that's almost an emoticon
 
Uriel
Uriel
@Adám I just finished typing it in mobile tryapl ⍨
 
Adám
Adám
@Uriel For some reason that doesn't seem to work on TryAPL. Not sure why.
 
Uriel
Uriel
11:07 PM
@Adám oh, I use it for symbols, I run the code on tio
 
Adám
Adám
@Uriel OS?
 
Uriel
Uriel
@Adám huh?
 
Adám
Adám
@Uriel Which OS does your mobile use?
 
caird coinheringaahing
caird coinheringaahing
@DestructibleLemon Never mind
 
Uriel
Uriel
11:25 PM
@Adám Android. Why?
 
Adám
Adám
@Uriel APL Keys
 
New Meta Posts
New Meta Posts
0
Q: Why do we count some multibyte characters in the esolangs as single bytes?

dylnanFor example, this submission written in APL (Dyalog) claims to be 39 bytes. It is 39 characters, but in the TIO link provided in the post (which happens to be an older version that is two characters longer but that does not matter) it says it is 41 characters and 87 bytes. Why does the score coun...

discussion
 
Uriel
Uriel
@Adám oh. my phone keyboard already supports more apl keys than my pc's does, and I prefer copying rather than switching kbds. thanks anyways!
 
Pavel
Pavel
11:49 PM
@orlp I believe I have requested this feature at least 3 times.
 
00:00 - 14:0014:00 - 18:0018:00 - 00:00

« first day (2475 days earlier)      last day (2354 days later) »