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2:00 PM
> Now, after getting that list, add &# to it , but only if those two characters were not already in the list, to avoid repetition. If they are already in the list, then keep them there.
the italic part is useless
 
0
A: Sandbox for Proposed Challenges

ColdGolfA Single Unicode Character code-golf Your task is to, take an input, of a single unicode character (eg:, the lowercase letter "a", or any other unicode character) For this unicode character, grab the unicode representation of it (in the earlier example of the lowercase letter "a", that's U+0061...

 
What italic?
 
because you said only alphanumerics chars are keeped
 
If there's any italic, I don't see it. Edit it and show me.
 
@LeakyNun Done.
 
2:01 PM
I guess.
 
@ColdGolf edited
 
Okay, I saw it.
The italic part is useless, why so?
 
> Now, take the numbers/characters in those two representations.
so there cant be #& in the list before
 
Ohhhh
I'll edit it now/
check the question again now
Is it good?
 
characters implies numbers
i think
 
2:04 PM
Nah. &# too.
 
&# isn't a number, and it's in the list.
 
@TùxCräftîñg Sometimes, but not always. It's usually best to clarify this. (Also, & and # are usually known as symbols, which may or may not be included in "characters".)
 
@TùxCräftîñg Edit the post yourself. I'm lazy lol
Why did you remove that?
@El'endiaStarman Think my challenge is good to go?
 
challenges are usually ~72h in the sandbox
to get feedback
 
2:08 PM
Whut
I am not waiting that much.
Is the challenge in its current state good to go?
 
i think it's clearer than the original
 
@ColdGolf No, not at all. Though I agree with Tux, it is a little clearer.
 
2:19 PM
@ColdGolf: Do you mind if I do a fairly drastic edit? I'll keep the content and ideas, but I'm gonna do an overhaul of formatting and presentation.
You can always roll it back if you don't like it.
 
@ASCII-only I merged another PR first (it was older, and your indentation regex still didn't work), and now there are conflicts. I tried a manual merge, but that just broke everything. :(
 
@Dennis Thanks
 
1
Q: Score Tarzan's Olympic Vine-Swinging Routine

EdwardOlympic vine-swingers perform their routines in standard trees. In particular, Standard Tree n has vertices for 0 up through n-1 and edges linking each nonzero vertex a to the vertex n % a below it. So, for example, Standard Tree 5 looks like this: 3 | 2 4 \ / 1 | 0 because the rema...

 
@flawr Oh man that's so friggin' cool. I've seen the wire-person and bush examples before, but the rest was new. And wow, so many potential applications...
I expect that sooner or later, someone is going to combine this with 3D-reconstruction-from-multiple-angles techniques to produce a 3D model that you can interact with, just using data from real-world objects.
And then this will be combined with VR, eventually...
 
2:55 PM
2
Q: The Great Pyramid of ASCII

AdnanIntroduction It's 2600 BC and people are building pyramids now. They already made the basis of the pyramid but don't know how to continue. So, they called you for help. The rules of making a pyramid is quite simple. For the layer above the previous layer, all you need to do is follow this step-...

 
@flawr that's amazing
 
@TimmyD You here?
I need some powershell magic.
 
3:17 PM
@El'endiaStarman you said somethin about an edit
do it
 
Can someone here give me a function 𝑓: ℕᵏ → ℕ? (please specify a 𝑘)
 
[x1 x2 x3 ... xn] -> x1*x2*x3*...*xn
 
@El'endiaStarman nice, works for both definition of ℕ
@ΛεγίωνΜάμμαλϠΨΠʹ how many hours did it take to typeset that
 
haha
 
@LeakyNun like 10 minutes
 
3:19 PM
@ΛεγίωνΜάμμαλϠΨΠʹ you meant 10 hours
 
@ΛεγίωνΜάμμαλϠΨΠʹ :o TIL
 
@ΛεγίωνΜάμμαλϠΨΠʹ why this username? WHYYYYY?
 
@El'endiaStarman Just so I know, what edits were you looking to do to the post?
@ΛεγίωνΜάμμαλϠΨΠʹ just. why
why punish us
 
3:23 PM
why not punish you
 
@ColdGolf Probably make the I/O less restrictive
 
@ColdGolf General formatting improvements, better presentation and flow of ideas, maybe change the wording in a few places. I'll get started on it now.
 
@quartata such as?
@El'endiaStarman Thanks!
 
xnor does raise a good point, which occurred to me earlier.
Is there any motivation for this sequence of steps? I find it arbitrary and kind-of bland. Many languages will just do it as a sequence of built ins. — xnor 55 secs ago
 
built ins ar disallowed
add that too
 
3:25 PM
Oh, that's on a different challenge
Wait, which challenge are we talking about?
 
@quartata "quar" is better, shorter.
 
What?
 
Oh, OK.
 
@ColdGolf You can add that yourself after I edit it.
 
3:27 PM
@El'endiaStarman Sure.
@ΛεγίωνΜάμμαλϠΨΠʹ how do you log in?
 
@ColdGolf by email address
 
lol
You need to get a name that doesn't sound like something scribbled on the wall of a mental institution.
 
@ColdGolf oh, stop copying
6
 
@ΛεγίωνΜάμμαλϠΨΠʹ I'd agree with you, but then we'd both be wrong.
 
@ColdGolf You're not winning any favors here...
 
3:35 PM
@El'endiaStarman haha fine.
 
'Evening people
 
Evening. Take the 5th character, and +1 in the alphabet.
 
An idea for a challenge.
 
@ColdGolf A one-word advice for you:
don't.
 
3:37 PM
Probably a dupe and/or trivial. :P
 
Don't you get jokes, people?
Seesh.
 
Whoops, wrong word
 
it would be a good CMC
 
What's CMC?
 
3:39 PM
^
 
?
 
Chat mini-challenge
 
Okay
In 3
2
1
 
testcases please
 
Short solution is PHP "Eveniog"
Valid PHP.
Test cases:

abcde ---> abcdf

abdcf ---> abdcg

abcdE ---> abcdF
 
3:41 PM
@ColdGolf the input will only consists of five characters?
 
nah
that was an example
test case:
 
testcases are meant to cover the edge cases
 
yeah fine
 
What does zzzzzz go to? Or ZZZZZZ?
Also, @ColdGolf, I finished editing your Sandboxed challenge.
 
abcde ----> abcdf

abcdef ---> abcdff

abcdEf ----> abcdFf
@El'endiaStarman Thanks!
 
3:43 PM
Pyth, 9 bytes: Xz4ChC@z4
 
@ColdGolf I hope you can see and agree that your challenge is much clearer now. In large part because it's much more succinct now.
 
Amazing, @LeakyNun!
 
Thanks
 
@El'endiaStarman Is my challenge good ta go?
 
In other news, I learned, because of this comment, that fentanyl is terrifying in an awesome way.
@ColdGolf I wouldn't say so. Let other people continue to give feedback.
 
3:45 PM
:(
Sure.
Second CMC. Get ready bois!
Given a string of two and only two numbers, put a chosen radix point between them.

Test cases:

1,2,"," ---> 1,2

1,2,"." ---> 1.2

1,2,"x" ---> 1x2
1,2,"aqwe" ---> 1aqwe2
 
I can do it for the first three test cases
Fourier: 9 bytes
 
Why not the fourth?
 
Fourier doesn't support multiple char input
 
ohh
okay, waiting for other solutions.
 
Pyth, 2 bytes: jF
 
3:49 PM
wait, that's for the first CMC, right?
@βετѧΛєҫαγ
@LeakyNun W T F
 
@ColdGolf No, that's for the second
 
@ColdGolf trivial CMCs are trivial
 
Fine. Third CMC is hard.
Third CMC:

Print/display code to display hello word (NOT *world*), in a chosen number of bytes, from 7-15

Examples:

7, "code here" ---> Prints/displays seven byte hello word code

8, "code here" ---> Prints/displays eight byte hello word code

etc.
 
@ColdGolf Minkolang, 20 bytes: n6Zn$zooxx$oxz6Zr$O. Half the code is solely for the input/output format.
 
@El'endiaStarman Cool.
Third CMC is above.
 
3:53 PM
@ColdGolf I don't think any language can display "hello word" in 7 bytes
the string itself already takes 10 bytes
 
@ColdGolf Welp, that's Fourier out. Unless you want a million-byte long program
 
@LeakyNun Fine. Restriction is from 16 bytes to 27 bytes.
 
@ColdGolf here, add an arbitrary amount of leading newlines to fit the byte-counts
 
@βετѧΛєҫαγ Write PPmd compression along with it?
@LeakyNun -_-
Fine.
 
@ColdGolf Haha you overestimate the ability of Fourier
 
3:55 PM
@ColdGolf Haha you underestimate the ability of Pyth
2
 
Fourth CMC is hard, real hard.
 
@LeakyNun that will print multiple times
 
Finally! An error!
haha
 
a real answer will be to pad with __
 
@Maltysen yes, __ and newline combined to form those bytes
 
@Adnan ah, dictionary
 
Jelly probably too
 
@Adnan You just mashed the keyboard to make that didn't you?
 
@Adnan The heck is that? I don't know how this magic works.
 
@Adnan By the way, nice challenge!
@ColdGolf it extracts from dictionary
 
3:57 PM
A new method of compression lol
 
@βετѧΛєҫαγ Ýe$ Í ðid thät
@LeakyNun Thanks :)
 
@Adnan The zalgo... Who parsed HTML with regex?
 
That's not zalgo, it's an advanced form of leet speak :p
 
@Dennis When I click "Copy snippet" on this, it gives a byte-count of 57 bytes
probably because of the pilcrow
 
Fourth CMC:

Write code that terminates in a day, keeps printing/displaying "a" and that can be mathematically verified without having to wait a day. Shortest code, in bytes, wins.
 
4:00 PM
@ColdGolf I think we don't mean the same thing when we say "hard"
a day meaning 24 hours?
 
Yes.
Note: "a" has to be printed after a newline.
a, newline, a newline, a, etc.
and it has to be cryllic lowercase letter a
 
ugh, next time please state that it is Cyrillic
 
fine
here's the cryllic version to copy/paste ----> а
 
@LeakyNun I was thinking more of "_ _", but newline works too
 
@ColdGolf here, the 0.25 is the number of seconds
except that the output is generated after the program halts
 
4:04 PM
> that can be mathematically verified without having to wait a day.
wat
 
1 sec isnt a day!
@LeakyNun
 
@ColdGolf here is the version that continually prints
 
@LeakyNun Yes, that's because it defaults to UTF-8. Right now, there are only 1-byte-per-char and UTF-8 options. Since Retina is capable of handling all Unicode characters, UTF-8 seems like the more reasonable choice.
 
@ColdGolf you can make it to 86400 secs which would be a day
but don't do that
@Dennis Alright, thanks
 
Fifth CMC:

Given input of UTF-8, in quotes, make it UTF-32

Examples:

"a" (UTF-8) -----> "a" (UTF-32)
shortest in bytes wins
 
4:08 PM
i really dont understand, print cryllic a for a day?
 
@ColdGolf Python: lambda s:s.encode("utf-32")
 
@ReleasingHeliumNuclei Yes.
Almost crashed my firefox
 
n=$[$(date +%H%M%S)-1];while [ $n != $(date +%H%M%S) ];do;echo а;done
 
@LeakyNun I hate this.
@ReleasingHeliumNuclei long, but cool.
Sixth CMC: [tag: underhanded]

Red country hates Blue country a lot. You work for red country, but secretly, a double agent.

Red-country has da top programmers.

Write code, that looks like it displays the string "2+2=4", however, it actually displays "Vault Number 3240"

Red-country will look at your code but won't bother to run it.
This is NOT code-golf
 
@LeakyNun Oh god utf-32
 
4:15 PM
UTF-32. The best kind of UTF.
Guaranteed to be safe.
 
Well, I just use utf-16 when handling things, if not utf-8
The problem with utf-32 is that it consumes 4 bytes, most of the time unnecessarily
 
4 bytes is the recommended daily intake for an adult body.
4 bytes = 2000 calories.
 
Umm.. Okay
 
Research shows that a single apple contains 124 bytes PNG. Great for health!
 
+[--->+ +< ]>.++++ +++++++
.--[--- >+<] >. ---- ---- -.+++++
+++. [- --- >+<]>++
+.[--> +++++<]>- -.[- ->+++<]>.-----
---.------ -- ---.+++.+ ++++++++++++.[-
-> +++++<]>+++.++[
-->+++<]>.-.++.----.
tried ascii art, didnt work out well
(look with monospace font)
 
4:19 PM
@ReleasingHeliumNuclei Link to try it out?
 
Not ascii art.
 
1 min ago, by Releasing Helium Nuclei
(look with monospace font)
 
I'm thinking of making a post.
Okay.
I believe you.
 
it (should :P) look like 2 + 2 4 (i forgot = yep)
 
4:21 PM
I believe you.Word + Consolas font = still no ascii art
 
oops i accidently removed the spaces
 
Consolas is the prettiest monospace font
 
> This message is too long.
i cant send the new one halp
 
Is there a correct technical term for "cubular"?
 
0
Q: Red country and Blue country

ColdGolfRed country hates Blue country. A lot. You work for Red country. Secretly, you're a double agent, though. Red country's top programmers check every little bit of code, but don't bother to run it. Write code that looks like it prints/displays the string "2+2=4", while, in reality, it displays ...

 
4:31 PM
@Mego I tried paypal.me, but unfortunately they insist on displaying my full name and home town.
 
@Dennis Dennis Mitchell, right?
 
Sort of.
 
Dennis Allen Mitchell?
 
and Wichita, Kansas
:P
 
@ColdGolf print("2+2=4");[--->++<]>.+++++++++++.--[--->+<]>.---------.++++++++.[---->+<]>+++.[-->+++++<]>--‌​.[-->+++<]>.--------.-----------.+++.+++++++++++++.[-->+++++<]>+++.++[-->+++<]>.-.++.----.
 
4:33 PM
@Maltysen If you look at my PPCG account, you'll actually see that I live here.
 
Dennis the Menace is a daily syndicated newspaper comic strip originally created, written, and illustrated by Hank Ketcham. It debuted on March 12, 1951, in 16 newspapers and was originally distributed by Post-Hall Syndicate. It is now written and drawn by Ketcham's former assistants, Marcus Hamilton and Ron Ferdinand, and distributed to at least 1,000 newspapers in 48 countries and in 19 languages by King Features Syndicate. The comic strip usually runs for a single panel on weekdays and a full strip on Sundays. The comic strip became so successful that it was adapted to other popular medi...
@Dennis oh wow, ninja'd me to that joke by a few years
 
@ReleasingHeliumNuclei Post to the post.
 
Well, it's closed
 
For a good reason.
 
I was going to say exactly that but I wanted to be tactful about it
 
4:39 PM
@quartata It's not underhanded much
it's restricted source and code golf
Where is underhanded?
 
@ColdGolf I don't mean to step on anyone's toes, but you really should consider giving the sandbox a shot. If too many of your challenges are downvoted, closed and/or deleted, the system will apply a question ban. The ban is automatic and cannot be lifted by moderators.
 
Stahp the power abuseee!!!
 
@ColdGolf Underhanded is "looks like it does x but really does y"
 
Looks like it does X, actually does X, but in reality, does Y
 
4:48 PM
-4
Q: Red country and Blue country

ColdGolfRed country hates Blue country. A lot. You work for Red country. Secretly, you're a double agent, though. Red country's top programmers check every little bit of code, but don't bother to run it. Write code that looks like it prints/displays the string "2+2=4", while, in reality, it displays ...

 
@ColdGolf Not sure what you're referring to, but downvoting, closing and deleting are essential parts of the SE network that help us keep certain quality standards. Writing a good challenge is non-trivial, especially because there are a lot of rules and guidelines that the community has established. For example, your latest challenge wouldn't have been closed a year ago, but it is deemed off topic at this point.
Rather than trying to familiarize yourself with all the rules, you can post your challenge in the sandbox. More experienced members of the community will help you to make sure that the challenge is clear, on topic, and not a duplicate of another challenge before posting it on the main site. With a few exceptions, even our most experienced challenge writers make use of the sandbox. It always helps to have an extra couple of eyes.
 
wait we off-topiced the underhand tag?
I thought that it was still on-topic for pop-cons
 
It's off topic especially for pop cons.
11
A: The state of the underhanded tag

Alex A.Note that underhanded is not a winning criterion, unlike popularity-contest; it's more like math in that it's a specification of the content of the challenge. Underhanded challenges can be code golfs or popularity contests or whatever. I don't think the issue is that it's difficult to find a obje...

 
@HelkaHomba Does it need to mean something subtly different from "cubic" or "cuboid"?
For a moment there I thought we were going to have a challenge called "cubular bells"
 
5:21 PM
 
0
A: Sandbox for Proposed Challenges

Rohan JhunjhunwalaEnterprise Quality Code! At Pretty Good consultants there is a focus on writing "quality" verbose code that is sufficiently engineered. Your boss has decided to test you on your skills. Consider the set of all programming languages in existence before the posting of this challenge. For this cha...

 
@Dennis rip
 
Malbolge anyone?
 
5:40 PM
@Dennis why
 
If it's that large, should be easy to shave off a byte somewhere ;)
 
@feersum if anyone can understand the syntax... :P
 
@Maltysen That's not really a big deal. I, for example, have already cracked answers in 8 languages which I had never used.
 
then get cracking please
nobody should be allowed to out-last dennis in a C&R
 
5:45 PM
are any of the answers safe?
 
No, and the closest one is over 6 days away :)
 
lel
 
user image
4
I always forget PPCG is desolate on weekends :(
 
1
Q: Exponentially Slimy Programming

Helka HombaSlimes are cube shaped enemies in Minecraft that break into multiple smaller versions of themselves when killed. For the purposes of this challenge we'll depict them as an 8×8 pixel image with 3 colors: ← True 8×8 version. The precise RGB colors are: 0, 0, 0 for the eyes and mouth 110, 170...

 
@HelkaHomba nice image
 

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