The Nineteenth Byte

Alex K Chen

06:08

In finding integral triplest (a,b,c) such that a*b*c divides (a+b+c)^2, I wrote this follwoing C code:

HyperNeutrino

def f():f()
f()

Alex K Chen

#include <stdio.h>

int getint(void);
int getint(void){
    int c;
    int i=0;
    c = getchar();
    do {
        i = (10*i)+c-'0';
        c = getchar();
    }
    while(c>='0' && c<='9');


    return i;
}

int main(){
    int N,i,j,k;
    int a,b;
    N = getint();
    printf("Integer recieved is %d \n Action starting :P \n ------------------ \n",N);
    for(i = 1; i<= N; i++){for(j = i; j<=N; j++){for(k = j; k<=N; k++){ a = (i+j+k)*(i+j+k); b = (i*j*k); if ((a%b)==0){ printf("(%d, %d, %d), [%d / %d = %d] \n",i,j,k,a,b,a/b); }}}}

Unfortunately, for very large numbers, it takes it modulo 2^something, so it doesn't works. So what should I do ?

(Anybody knowing C can discuss it here, or here)

HyperNeutrino

So hold on, what exactly does this do?

Alex K Chen

@HyperNeutrino My shitty code ?

HyperNeutrino

"shitty" eh ¯\_(ツ)_/¯ but yeah what does the C code do

Hm. Interesting. Mod diamonds don't show up when a user is entering a room (though their name is blue). (cc @MartinEnder)

Alex K Chen

06:12

@HyperNeutrino Scroll a bit above.

@HyperNeutrino That's a doppelganger of @MartinEnder :P

HyperNeutrino

no but like given N what does it do

Alex K Chen

Given an integer N, it outputs all integral tuples (i,j,k) (nondecreasing) such that i*j*k divides (i+j+k)**2

HyperNeutrino

Where 0 < i, j, k < N?

Alex K Chen

Yeah.

HyperNeutrino

Ah okay.

So you're just brute-forcing with O(n^3)?

(I don't see how I would do it better lol)

Alex K Chen

06:16

(Maybe N+1 or N-1, edge cases are a bit fuzzy and it messes by brain to think about sign errors in edge cases so I didn't think much about what happens near N)

@Emigna You know C ?

Emigna

Haven't used it much I'm afraid

HyperNeutrino

O((N+1)^3) = O(N^3 + 3N^2 + 3N + 1) = O(N^3)

DJMcMayhem

@DLosc I'm glad to hear it! :)

Do you mean the looping in general, or the return value?

Alex K Chen

I don't know about O(stuff), anybody knows anything about my problem ?

feersum

@AlexKChen You're using 32-bit integers. You could at least get a bit farther with 64- (or 128-) bit integers.

Mr. Xcoder

06:18

Does someone have the patience and time to explain what in the world O(stuff) complexity is? What does it measure - performance or sth?

HyperNeutrino

It could measure number of operations, amount of storage required, etc.

Mr. Xcoder

And what does O mean?

Alex K Chen

@feersum What should I change in the line int a,b; to do that ?

feersum

int64_t

Mr. Xcoder

O -> Operations??

Alex K Chen

06:20

int64_t a,b; @feersum ?

HyperNeutrino

I don't know :P I just know how to use it.

Mr. Xcoder

@HyperNeutrino Thanks anyway.

feersum

And anywhere else you need it to not overflow.

HyperNeutrino

No problem. I can explain what it is if you'd like, but I don't know what the O means (or omega, or theta).

O -> Order

v
https://en.wikipedia.org/wiki/Big_O_notation

Mr. Xcoder

New APL-like face: Ω.Ω

Alex K Chen

06:21

@feersum ?

DLosc

@DJMcMayhem The fact that the values inside, from all iterations of the loop, are added up and returned. I think I just assumed the return value would be from the last iteration or something.

Mr. Xcoder

I am about to get the swift tag badge on SO Ω.Ω

HyperNeutrino

:o nice. what level?

Mr. Xcoder

Bronze

HyperNeutrino

ooo nice

Mr. Xcoder

06:24

97 / 20 answer, 89 / 100 score

HyperNeutrino

lol 97/20 answers

Mr. Xcoder

Exactly

;)

HyperNeutrino

Then again I had 24/5 questions before getting the Curious badge xD

Mr. Xcoder

I get like, 1upvote/answer

because the swift community is really lazy

HyperNeutrino

rip

Mr. Xcoder

06:25

and they hate clicking the +1 button ://

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Guess if the relation converges, diverges, or oscillates test-batterymathdecision-problem Challenge Unfortunately, the nature of this challenge only allows languages where a relation can be described as either a function as an object (Python), a lambda as a function (Python, Java, Ruby, etc), a...

HyperNeutrino

then use some other language

DJMcMayhem

@DLosc Yeah, it's a super cool property. It allows for easy representation of polygonal numbers

HyperNeutrino

@NewSandboxedPosts How the hell is NSP this fast?

DJMcMayhem

And this is absolutely gorgeous: Try it online!

HyperNeutrino

06:26

That literally took NSP 43 seconds :o

Mr. Xcoder

@HyperNeutrino Someone told me: "Very nice answer. This will totally help the OP", and my score was 0...

@HyperNeutrino I got frustrated and began using Python

DJMcMayhem

Oh wait, that doesn't actually use it, haha

HyperNeutrino

@DJMcMayhem is this WW's floor sqrt n?

@Mr.Xcoder Ah I see. SO things either get way too many upvotes or not enough

Mr. Xcoder

In python I have 30/20 answers and 36/100 score

25k upvotes

means 25k rep :))

Destructible Lemon

in Github Compiler Chain, 11 mins ago, by ATaco

Try it online!

HyperNeutrino

06:28

No it means 2.5M

ATaco

Who likes 7kb cat programs in Brainfuck?

HyperNeutrino

except capping probably

Is there no better way of doing cat?

,[.,] doesn't exist?

Mr. Xcoder

@HyperNeutrino It actually means 250k

Nor of us was right :))

ATaco

That sounds much less exciting.

HyperNeutrino

right i multiplied by 100 for whatever reason >.<

too tired i should be sleeping rn

Mr. Xcoder

06:30

@DestructibleLemon That fu**** my Brain, indeed

HyperNeutrino

CMC: tac; that is, take a single line of input and output it reversed.

BF: ,[>,]<[.<]

Mr. Xcoder

@HyperNeutrino Python, 20 bytes: print(input()[::-1])

Alex K Chen

Anybody my problem here ?

The C Programming Language

General discussion about the C programming language, usage, sy...

HyperNeutrino

I should change it to default I/O actually.

CMC: tac; that is, given a string, reverse it.

Alex K Chen

(Not my room, so I don't think I would be banned for promothin)

HyperNeutrino

06:32

there's no problem with linking chatrooms for help usually.

So the python solution could become lambda x:x[::-1]

Mr. Xcoder

@HyperNeutrino Python, 16 bytes: lambda n:n[::-1]

Hey

HyperNeutrino

:)

DJMcMayhem

@HyperNeutrino No it's WW's square root of an input that is guaranteed to be square

HyperNeutrino

Jelly, 1 byte: U.

Mr. Xcoder

In swift it would be frustratingly long:

HyperNeutrino

06:33

@DJMcMayhem oh ok so that's why the output exceeded 128KiB for 10.

lol

DJMcMayhem

@HyperNeutrino V, 1 byte: æ

@HyperNeutrino Weird. I don't think 10 should output anything, since it doesn't terminate

HyperNeutrino

æ looks almost the same when turned 180 degrees lol.

@DJMcMayhem well it keeps producing whitespace until it went over the limit probably

CMC: a XNOR b (cc @xnor)

DLosc

It still puzzles me why Python doesn't have a reverse function. It wouldn't be better for golf, of course, but usually "Readability counts," so...

DJMcMayhem

But it shouldn't output anything until it terminates

Weird.

I'm going to bed, good night all!

HyperNeutrino

Goodnight DJ! :D

Mr. Xcoder

06:36

Good morning too @DJMcMayhem !

DLosc

G'night!

Mr. Xcoder

Although this is not the most interesting challenge in the World, I think I'm going to post it today.

Destructible Lemon

@DLosc it does

DLosc

For lists, but not for strings.

Oh wait--it's reversed.

Alex K Chen

How to specify 6

...4 bit integers in C ?

DLosc

06:44

I amend my previous comment: it still puzzles me why the [::-1] idiom is so popular that I forgot reversed existed. :P Though maybe it's because I hang out here too much.

Leaky Nun

@AlexKChen you mean 4 bytes?

Alex K Chen

@LeakyNun Come in the C room.

Anonymous

@DLosc [::-1] is shorter so it is obviously better. I often forget that reversed exists, too :P

Anonymous

It would be nice to have some way to reverse definitely-finite generators without completely consuming them first, but that will never happen.

DLosc

Hm, yes, it's also true that reversed gives a generator-like object instead of a string. Possibly more efficient, probably less convenient.

ATaco

06:50

I love JS, because arrays are only probably arrays.

Destructible Lemon

@DLosc it gives the language flavour

''.join is part of the soul of python

Anonymous

@DLosc That's a good thing. Generators should be used whenever convenient if they add efficiency without sacrificing legibility.

Destructible Lemon

and for i in range(something): and not using i

Anonymous

@DestructibleLemon That's when _ should be used. Or better yet, use map.

Destructible Lemon

Never

for i in etc. 4 life

Anonymous

06:53

Functional programming is a thing of beauty

Fatalize

Go learn Husk then!

Anonymous

My time is occupied by a decently-large work project I'm working on

Mr. Xcoder

@Fatalize Better Go learn Haskell, then!

Anonymous

So no time for new languages right now

Fatalize

@Mr.Xcoder Husk is to Haskell what Pyth is to Python

kind of

Anonymous

06:55

And any spare time I do have, I use to blow off steam by either hanging out with my wife, playing Factorio, or playing SpeedRunners

Mr. Xcoder

for _ in range(n) is also present in swift, in the form of for _ in 0..<n

Destructible Lemon

it was only recently I learned ''.join can be used on strings

Anonymous

@DestructibleLemon I shudder at the thought of what you were previously using, given that ''.join is the obvious and preferred method of joining strings

Mr. Xcoder

This is totally the Strangest question I have ever posted:

0

Q: HyperNeutrino is back!

Today, @HyperNeutrino succeeded merging his two accounts, and finally got the reputation he lost back. Now, it's time to celebrate! Your task is to output this exact text: /\ / \ / \ / \ / \ / ...

It has +11/-11 and 11 answers

DLosc

@DestructibleLemon Flavor is good as long as it makes sense and isn't annoying to type. if __name__ == "__main__": is one of my least favorite things about Python. (But I like most everything else about it.)

Mr. Xcoder

06:59

@DLosc Why do you use it then?

And in the timeit module, another strangeness: timeit.timeit('function(9)','from __main__ import function',times=1000).

DLosc

@Mr.Xcoder It's how you can specify some code that executes if you run a file as the main program, but doesn't execute if you import the file from somewhere else. I don't know of any other way to accomplish that (but if there is one, please let me know).

Mr. Xcoder

@DLosc No, I don't. I only use Playground-code in Python (just for code golf and basic SO questions)

DLosc

Ah, I see.

Destructible Lemon

@Mego no, as in 'a'.join("hhhh") -> "hahahah"

Mr. Xcoder

07:25

What are your favourite golfing language and highly-used non-golfing programming language? (asking everyone who is willing to answer), because it is interesting to see combinations between these types of languages

Personally, I am learning Pyth, so Pyth is the favourite golfing language while Swift and Python are my favourite highly-used langauges.

Jim

@Mr.Xcoder The only golfing language I know is Pyth, so that's Pyth. And I highly use Python and Java for real work

Mr. Xcoder

@Jim Nearly the same :P. Except for the "rivals" Swift and Java

Erik the Outgolfer

@Mr.Xcoder of course it's Jelly...but Pyth and CJam are also interesting

Mr. Xcoder

And high-use :)

Anonymous

@Mr.Xcoder Actually/Python

Anonymous

07:36

I might be a bit biased, though

Mr. Xcoder

And my question now: Seriously? :P

Ok gtg now. sya!

Jim

I feel like the golfing language that's growing quickly on CG is 05ab1e

Anonymous

Yeah 05ab1e is pretty popular. Jelly is also very popular. I'm kinda sad that those two overshadow Actually, even though Actually regularly has comparable scores.

Erik the Outgolfer

@Mego it definitely wins the hello world (every other character) challenge

(solution already posted by Okx: HH)

Anonymous

I haven't looked at that challenge yet. I'm guessing that the challenge is "write a program such that taking all of the even bytes or all of the odd bytes both output HW"?

Erik the Outgolfer

07:43

@Mego not exactly

Leaky Nun

10

Q: Parse a list of lists into a Sad-List

In this challenge, you must parse a list of lists, into a simpler list format. This challenge is based on my sadflak parser. In my sadflak parser, it has all the () removed, replaced with the sum of the ()s at the start of the list, to make the program run faster. To parse into a Sad-List, you ...

code-golf array-manipulation brain-flak

Erik the Outgolfer

@LeakyNun ono that's completely wrong challenge

Leaky Nun

no, I mean, I would like Mego to do this

in Actually

Anonymous

I'll take a look at it

Erik the Outgolfer

@LeakyNun then you misclicked some reply button...I see you edited

Fatalize

07:45

@Jim It it? I feel like it's been popular for months now

Jim

@Fatalize I'm new to PPCG, but from what I see, 05ab1e is a fairly new language, and I already see it in a lot of answers. And often it performs better than others

Fatalize

Jelly and 05AB1E definitely dominate challenges nowadays, both in terms of scores and number of answers

Languages like Pyth, CJam, Actually and even MATL I feel have decreased in popularity

Leaky Nun

@Fatalize there is no predicate for count?

Fatalize

@LeakyNun what do you mean?

Leaky Nun

@Fatalize a.count(b)

@Fatalize I'm seeing increased number of learners of Pyth

Fatalize

07:50

@LeakyNun I'm still not sure what you mean

Jim

After checking, the first commit to 05ab1e has been made on December, 21st, 2015. That's older than I thought

Leaky Nun

@Fatalize Brachylog.

Fatalize

@Jim The first github commit is … god damnit ninja'd

Leaky Nun

number of occurrences of b in a.

Fatalize

@LeakyNun tio.run/##SypKTM6ozMlPN/r//@Hu3v//lUpSi0uU/kcBAA

Leaky Nun

07:51

@Fatalize ọ ok

Fatalize

There's also the meta-predicate ᶜ - count

Leaky Nun

@Fatalize what's wrong with this?

Mr. Xcoder

I haven't seen a CJam answer in months

When I first joined PPCG, It was dominated by J, GolfScript and CJam

I haven't seen GolfScript in a long time either

Fatalize

@LeakyNun [1,Output] isn't an integer

@Mr.Xcoder Pretty much only Peter Taylor and Martin Ender use CJam

Mr. Xcoder

@Fatalize I haven't seen @PeterTaylor post a CJam answer either in a long time

Leaky Nun

07:56

@Fatalize I removed ℕ and it is still false

Mr. Xcoder

Oh, I actually have

22 hours ago

Erik the Outgolfer

actually many people still use cjam

Mr. Xcoder

How to check if the input is equal to the output in Brachylog?

Jim

@EriktheOutgolfer but a few use Actually

Erik the Outgolfer

mostly Mego

Mr. Xcoder

07:58

Does ?. work?

Fatalize

@Mr.Xcoder Empty program

@Mr.Xcoder Yes

Mr. Xcoder

@Fatalize Ooh, nice

Is it Prolog-based?

Fatalize

yes

Erik the Outgolfer

that's why I don't know Brachylog yet...I don't even know Prolog...D:

and the docs assume I do...

Fatalize

@LeakyNun ∈ is stupid and needs to be fixed when using a subscript

gtg, bye

Leaky Nun

08:01

gg

Erik the Outgolfer

bye

Anonymous

@LeakyNun Done

Leaky Nun

@Mego :o I didn't know recurse exists

Anonymous

It does sort of, and it was entirely by accident

Anonymous

Q pushes the current scope's code (it's a quine builtin)

Leaky Nun

08:13

oh...

Anonymous

It's not usually very useful, but when it is, it's practically mandatory

New Main Posts

2

Q: Fizz-Buzzify a String

You will be given a String that only contains letters of the English Alphabet, both lowercase and uppercase (ASCII 65-90 and 97-122). Your task is to output the Fizz-Buzzified version of the String. How to Fizz-Buzzify a String? Each letter that has an even index in the English alphabet (the a...

code-golf string

Peter Taylor

@Mr.Xcoder I posted one in April, one in May, and one yesterday, but I haven't found many of the questions on PPCG this year to be interesting enough to bother golfing.

Leaky Nun

08:40

0

Q: Conciseness on a Title

Consider the following sentence taken from this Wikipedia page: It was numbered 13 to synchronize itself with the version numbering of Flash Player. The statement implies the subsequent versions of the application are syncronized with the version of the Flash Player. In other words, the nex...

grammar title

golfing English

0

Q: How to shorten this long sentence?

The sum of molar concentration of A was calculated by adding the molar concentrations of compound1, and compound2, compound3, and compound4, and the molar sum of B concentration was calculated by adding the molar sum of concentrations of compound5, compound6, compound7, compound8.

grammar

golfing English part 2

Jim

@LeakyNun thirty minutes passed on my answer in Fizz-Buzzify a String just to find out you already answered in Pyth and outgolfed me of 10 bytes ><

Leaky Nun

@Jim what is your solution?

well, you didn't really waste your time. It's an experience and learning and practice in and of itself

Jim

@LeakyNun K"fizz buzz"sm@crK?>Cd90Z1\ %Cd2

Not happy with the ?>Cd90Z1 part

Leaky Nun

@Jim a boolean itself is an integer

Jim

@LeakyNun Let me golf that

Leaky Nun

08:42

and modular indexing, so you don't need %..2

and you can split the string before storing to K

and you can use c...) or c...d instead of c...\

in m the d would need to be ;

and anyone ignorant of Pyth's existence would think that I'm uttering utter gibberish.

Jim

@LeakyNun Absolutely

@LeakyNun I'm not sure if I want to split it before storing to K because that let me do only one r...1 or r...0

Erik the Outgolfer

@Jim Leaky answered in 3 minutes, you spent 30 minutes...the question was asked 33 minutes ago, so let's say that Leaky answered exactly when you just started working on your answer

Leaky Nun

@Jim you can change the case after getting the string

Jim

@LeakyNun Right

Leaky Nun

in any case, why are you using K when you only need it once?

Jim

08:46

@LeakyNun In the first draft I used it twice. Forgot to remove it then

Leaky Nun

@EriktheOutgolfer how long did it take you to compress the strings?

Erik the Outgolfer

umm...what strings? in my Jelly answer? I used the compressor...

Lembik

You have got to love any code that starts with a close bracket :) codegolf.stackexchange.com/a/128520/9206

Martin Ender

@Adám forgot to mention yesterday: another feature that makes .NET a lot more powerful than PCRE is it's right-to-left matching which makes it the only flavour with variable-length lookbehinds.

Leaky Nun

@EriktheOutgolfer it still takes you time right

oh and btw we tie

Erik the Outgolfer

08:48

@LeakyNun no I reduced to 21

Leaky Nun

@EriktheOutgolfer so did I

:P

Erik the Outgolfer

phew thank god I found the trivial golf before you found another

Leaky Nun

the jk?

Erik the Outgolfer

(why should you ever use ;@Œu$ in Jelly...)

Leaky Nun

lol

I don't get you

Erik the Outgolfer

08:50

yeah now it's Œu;$...the former is just disgusting Jelly

Leaky Nun

oh, lol

Dada

@MartinEnder It should still be possible to implement variable length multiple lookbehind in Perl, shouldn't it?

Martin Ender

@WheatWizard A008478 (numbers which remain unchanged if you reverse their prime-exponent pairs), 70 bytes in Mathematica: Nest[#+1//.x_/;(1##&@@Power@@@Reverse/@FactorInteger@x!=x):>x+1&,1,#]&

@Dada what do you mean by that?

Dada

when you say "which makes it the only flavour with variable-length lookbehinds", I feel like you mean that the fact that it matches right-to-left is what allows for variable-length lookbehind to exists.. whereas I'd expect that it's possible to implement them inside perl. But peharps I misunderstood you

Adám

@MartinEnder Well, now I've made QuadR, a PCRE based competitor to Retina. In this challenge it would use almost 50% fewer bytes than the current shortest Retina answer. Looking forward to upcoming challenges which are a good fit. If you have any suggestions to challenges I should try it on (even if non-competing), let me know.

Martin Ender

08:55

@Dada I'm not aware that it's possible to use variable-length lookbehinds (or fake them) in any other flavour. the closest thing Perl has to mimic it \K, which isn't quite the same thing

Jim

@LeakyNun Nicer answer, 23 bytes: sm@cr"fizz buzz"<d\a)Cd

Leaky Nun

It's very annoying that Chrome matches "ow" when I'm searching "ØW"

do you all see any way of overcoming that?

Martin Ender

try chrome.google.com/webstore/detail/chrome-regex-search/… ?

(I've been meaning to look for such an extension for ages, but always forgot...)

Leaky Nun

@MartinEnder vielen Dank

Dada

@MartinEnder Oh, what I meant by "inside Perl" is "modifying the Perl regex engine". They don't exist in Perl for now, but I don't see any reasons why they can't exist, but you seemed to say that they just couldn't be added to perl's regex engine

Leaky Nun

08:57

@EriktheOutgolfer did you forget the existence of O?

Martin Ender

@Dada oh now I see. well I guess in principle they're possible, but implementing them via anything other than RTL-matching seems incredibly inefficient

Erik the Outgolfer

@LeakyNun not sure how would it help me though...modular indexing perhaps, but there's a gap between [A-Z] and [a-z]

yeah I did think of that too

Leaky Nun

@EriktheOutgolfer the gap doesn't matter

and I don't see why you need ẋ13

Martin Ender

@Adám "non-competing" for newer languages is no longer a thing. but it seems that one isn't shorter because of PCRE, but because you can process multiple regex/substitution pairs at once (which is quite nifty, I'll have to consider that feature for Retina)

Erik the Outgolfer

hmm...still sleepy

Adám

09:01

@MartinEnder :-) Oh, I didn't realise the proposal had gone through. Also, time to draw lines on the grand diagram…

Leaky Nun

@EriktheOutgolfer quite apparently

Erik the Outgolfer

@LeakyNun ohh...I don't think it'd work without it...it'd generate the list ['FIZZ', 'BUZZ', 'fizz', 'buzz']...CDCDCD would translate to fizzbuzzfizzbuzzfizzbuzz then while you need uppercase FIZZBUZZFIZZBUZZFIZZBUZZ

Leaky Nun

I don't care what your algorithm is. I only know that you can do it without ẋ13 and it would probably be golfier

Erik the Outgolfer

@LeakyNun I should be able to do it

Mayube

Okay it's finally time

today is the day I begin un-fucking Braingolf

Leaky Nun

09:07

@Mayube how?

Jim

One more byte saved: Pyth, 22 bytes: smr@c"fizzbuzz"4Cd<d\a

Don't know if I can do better with this approach

Leaky Nun

@Jim swap the two operands of r and make the d at the end implicit

and then end up with basically the same solution as mine

Jim

New solution: sm@cr"fizzbuzz"<d\a4C 21 bytes

Yeah, that's actually the same solution

That's cool

Anonymous

@Mayube That's usually not a reversible operation

New Main Posts

2

Q: Time calculator

This challenge is related to a project I did last year (in Ruby). To make it more fun I decided to do it in as few bytes as possible. I didn't know about code golf back then so now that I found out about it and found this community I was wondering if anybody can beat me :) The program should ret...

code-golf ruby

0

Q: Increasing, decreasing, all, none, ones or twos?

Challenge: Take two inputs, a vector/list containing digits 1 and 2 and a string (no, you may not take 0/1 instead). The string will be one of the following (in lowercase, exactly as written below: increasing decreasing ones twos all none If the string is ____ then you shall return the indice...

code-golf number

Stewie Griffin

09:24

@LeakyNun sandboxes it, before it got any answers...

Might not have been my best challenge...

Destructible Lemon

khan academy is glitchy as heck

Mayube

@LeakyNun re-writing the interpreter from scratch to A: not be shit, B: Support nested conditionals and loops and C: also gunna add a bunch of literal builtins

Leaky Nun

@Mayube what about the @ that penetrates through loops?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Challenge: Take two inputs, a vector/list containing digits 1 and 2 and a string (no, you may not take 0/1 instead). The string will be one of the following (in lowercase, exactly as written below: increasing decreasing ones twos all none If the string is ____ then you shall return the indice...

Mayube

09:40

@LeakyNun that too

and I'm getting rid of the stupid-ass putting a number after a @ altogether

Destructible Lemon

Erik the Outgolfer

how should we go if we don't even know what %(num) is...

Destructible Lemon

yeah this is glitchy as heck, like I said

TheLethalCoder

@LiefdeWen Then it's not needed you'd just wrap the ternary in brackets: using System;a=>(a==null?DateTime.Now:DateTime.Now.Add(TimeSpan.Parse(a‌))).ToString(‌"H:mm") But I think you would need to support all input formats.

LiefdeWen

09:56

@TheLethalCoder If the question requires all those input formats then yes the solution grows by a few 100 bytes.

TheLethalCoder

@LiefdeWen It's been closed now anyway but yeah it wouldn't have had been simple anymore. Although you could have used ParseExact with an array of formats which wouldn't have bumped it up too much. Not sure if you can do that on TimeSpan but it would have been just as simple to do it on DateTime I believe.

LiefdeWen

@TheLethalCoder I hope you know you are the one who drove me to posting questions rather than answering them, couldn't handle you being faster and better at every turn.

TheLethalCoder

@LiefdeWen Haha it's fun golfing in C# seeing the different ways you can do it though. And you've beat me once today, would have been twice if this question hadn't been closed. Just keep going for answering, I'm not the smartest with it, always takes me a while to golf it down just learn the common tips and tricks and it's easy to get a "short" answer.

LiefdeWen

@TheLethalCoder "Just keep going for answering" :( Are my questions that bad?

TheLethalCoder

@LiefdeWen I haven't looked through them and rarely look at the asker of a challenge so I wouldn't know.

@LiefdeWen But I meant that more as in don't give up answering because someone is faster and shorter, that will almost always be the case. If your approach is different post it, might be someone else can actually help you golf some off of it and yours would then be the shortest.

New Meta Posts

10:11

0

Q: Allow lower reps to see removed answers

Many times I have had answers and found out they were invalid due to a obscure meta post. But people have said things like: "This is the 3rd time people have done this and it is still not funny", "This is still invalid just like the other removed answers". I can't see those answers and I believe ...

feature-request

LiefdeWen

10:34

@TheLethalCoder Haha, Problem with C# is our approaches are rarely different, but thanks, will keep on keeping on.

TheLethalCoder

10:52

@LiefdeWen For simple challenged yes, but even then there are multiple ways, as we found with the last challenge. We both posted a similar solution then I found a different solution that was only slightly longer.

Erik the Outgolfer

somebody has been downvoting solutions here

Leaky Nun

@EriktheOutgolfer I didn't answer :P ~~so I don't care~~

Erik the Outgolfer

that's where you were luckily ultimately ninja'd I think...both Jelly and Pyth

Mayube

I only see one downvoted answer on there, and it's Python

totallyhuman

Oh yay people upvoted

Adám

11:00

CMC: remove umlauts from upper and lowercase AEIOU: Häagen-Dazs → Haagen-Dazs; Yogen Früz → Yogen Fruz; Frusen Glädjé → Frusen Gladjé; Epäjärjestelmällistyttämättömyydellänsäkäänköhän → Epajarjestelmallistyttamattomyydellansakaankohan

Destructible Lemon

I am working on a bf compiler for compiling a lang to bf!

Mayube

@DestructibleLemon So you give it code in a language and it converts it to equivalent bf?

Destructible Lemon

yup

Mayube

what language(s) does it accept?

Destructible Lemon

Github Compiler Chain

github.com/Compiler-Chain

badstacks, it is called

Mayube

11:04

also that's called a transpiler fyi

Leaky Nun

@Adám e and i umlaut?

Destructible Lemon

@Mayube actually, a transpiler is just a compiler that does not compile to machine code

Mayube

A transpiler is a compiler that "compiles" source code from one language to equivalent source code in another language

Destructible Lemon

mmhm. still a compiler

maybe it would be clearer if I called it transpiler chain?

nah that doesn't have alliteration

my code:

+++++ +++++ +++++ +++++ +++++ +++++
+++++ +++++ +++++ +++++ +++++ +++++ ++
....
----- ----- ----- ----
.
+++++ +++++ +++++ ++++
..
----- ----- ----- ----
.
+++++ +++++ +++++ ++++
.
>[we just printed ">>>>+>>+>"]<
commands (ask ataco what these commands do; I have little clue about the less obvious ones):
pop: !
flip: "
peek: #
while: (
end: )
write: <period>
rand: <question mark>
dec: <minus>
inc: <plus>
zero: *
stackadd: $
stacksub: '
move: /
copy: &
read: <comma>
0123456789: push that number on to the stack

noone ever accused me of having good code formatting

totallyhuman

TFW you're forced to install eclipse for a computer science course

Destructible Lemon

11:07

@Downgoat in case you missed it, we started work on the first compiler. in fact the second language is already on the github

Mayube

@totallyhuman b-but... intellij

Adám

@LeakyNun yes? OK, not "umlaut", but "diaeresis" or "trema" if you want.

mınxomaτ

11:19

@PhiNotPi Did you apply for the upgrade to the 16 qubit quantum computer?

Okx

IntelliJ > NetBeans > Eclipse >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Dr. Java
you're welcome

Mayube

>>>>>>>>>>>working in java without an IDE

Okx

^

Mayube

as much as I like just using one thing for all my languages

New Main Posts

0

Q: Build me a city

Coders are always trying to flatten arrays into boring 1-dimensional entities and it makes me sad. Your task is to unflatten an arbitrary string of characters, outputting a lovely city skyscape. Consider the string: aaabbbbbccqrrrssstttttttPPw It looks much better like this: tt ...

code-golf string ascii-art

totallyhuman

11:33

>>>>>>>>>>>>>>>>>>>>>> bluej

Mr. Xcoder

CMC: Given an integer, return its roman numeral equivalent

10 -> X

15 -> XV

1203 -> MCCIII

Built-ins are disallowed.

Mayube

hmm

Dada

@Mr.Xcoder It has been done before

Mayube

M is the largest roman numeral right?

Mr. Xcoder

@Dada Sorry.

@Mayube Yes

Mayube

11:42

oh wait this'll be harder than I thought, I forgot about cases like IV

Mr. Xcoder

@Mayube Forget it. It is a dupe

Adám

@Mr.Xcoder Roman←→Arabic is a many-to-one relationship.

Mr. Xcoder

@Adám True

How to gently tell one that I've golfed they're answer without knowing the programming language at all?

trichoplax

Just don't mention that you don't know the language (although in my experience that leaves no excuse when it turns out it doesn't work)

Adám

@Mr.Xcoder "Can you shorten longcode to shtcde?"

Mr. Xcoder

11:47

@Adám Yes, already done.

Golfed 10 bytes by removing whitespace :/

This F# answer

The C Programming Language

Github Compiler Chain

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