The Nineteenth Byte

You have to write an interpreter for a cool language called Chicken! You should read a Chicken program from a file, standard input, program or function arguments, or whatever is most convenient for your language, as well as input to the program. You should print or return the result of interpr...

Leaky Nun

@DestructibleWatermelon you can build on this idea

(try some other inputs to see the principle!)

TùxCräftîñg

PLZ HALP GNU GCC DONT HAVE 64-BIT LITERALS :(:(:(:(:(

Destructible Watermelon

Well, I was going to give up on the idea anyway

i probably just would have stopped caring

;_;

mınxomaτ

9:08 AM

@TùxCräftîñg Sure it does.

TùxCräftîñg

dont work on my machine, interpret like 0, even with ULL

mınxomaτ

Then you are doing something wrong.

Destructible Watermelon

I need to think of cool memory system

user214599

use int64_t

Destructible Watermelon

all the best esolangs have cool memory systems or code systems

befunge belongs to the cool code systems

while bf belongs to cool memory systems

TùxCräftîñg

9:09 AM

void p1_setcr(Processor1 *state, uint64 number) {
    state->CR &= ~(F_N | F_P | F_Z);
    if (number == 0) state->CR |= F_Z;
    if (number > 0x7FFFFFFFFFFFFFFFULL) state->CR |= F_N;
    else state->CR |= F_P;
}

where the defines are

// Flags
#define F_N 0x8000000000000000ULL // Negative or lesser than
#define F_P 0x4000000000000000ULL // Positive or greater than
#define F_Z 0x2000000000000000ULL // Zero of equals
#define F_V 0x1000000000000000ULL // Overflow

state->CR is never modified

mınxomaτ

LL will have at least 64 bits. You can also just use int64_t, which will have exactly that.

Destructible Watermelon

where does the name of this chatroom come from?

TùxCräftîñg

i get unknow type name with uint64_t

Destructible Watermelon

oh wait

TùxCräftîñg

even with stdint or stddef

mınxomaτ

9:11 AM

Nineteenth hole

In golf, the nineteenth hole is a slang term for a pub, bar, or restaurant on or near the golf course, very often the clubhouse itself. A standard round of golf has only eighteen holes, so golfers will say they are at the 'nineteenth hole', meaning they are enjoying a drink after the game. The concept is similar to Après-ski in skiing. The 19th hole on miniature golf courses is often a hole in which if a hole-in-one is scored, one receives a free game. == References in media == The golf stories of author P. G. Wodehouse, which are narrated by his character, the Oldest Member, discuss the nineteenth...

Destructible Watermelon

ty

TùxCräftîñg

@DestructibleWatermelon and The Nineteenth Byte is exactly 19 bytes long

user214599

#include <cstdint> or <stdint.h>

mınxomaτ

@TùxCräftîñg It's in #include <inttypes.h> for C99

Destructible Watermelon

I remembered this cool idea for a language i had earlier

TùxCräftîñg

9:12 AM

\o/ it work

Destructible Watermelon

My idea is probably too complex for me to implement it anyway ;_;

mınxomaτ

@TùxCräftîñg Not surprising.

Destructible Watermelon

I had an idea for a challenge

and the last one was 10 hours ago

TùxCräftîñg

nope, CR still unchanged

Destructible Watermelon

would people like me to just preview the challenge here instead of sandboxing it?

trichoplax

9:16 AM

Sandbox as many as you like at the same time

Destructible Watermelon

sandboxing it now

or starting to sandbox it

TùxCräftîñg

plz halp gcc hate me ;_;

Destructible Watermelon

you have to show your dominance

make it perform menial tasks

to weaken it

like adding by unary adding.

be back

TùxCräftîñg

this dont helped me to or with 64-bit literals

user214599

hategccs gonna hate

Luis Mendo

9:32 AM

@LeakyNun Oops. Corrected. Realmente son ocho elementos. ¡Gracias!

Leaky Nun

@LuisMendo de nada

zʏᴀʙiɴ101

@LuisMendo I don't get the second part, and Leaky Nun's reply.

Leaky Nun

@LuisMendo Por que habla en medío inglés y medío español?

hablas*

Luis Mendo

@LeakyNun Because I'm used to English here, I dunno :-)

zʏᴀʙiɴ101

^^ And these two messages. ^^^

Luis Mendo

9:34 AM

@zʏᴀʙiɴ101 Spanglish. Sorry :-)

TùxCräftîñg

i ≈understand

Leaky Nun

@TùxCräftîñg you speak spanish?

TùxCräftîñg

no, i speak french, but spanish and french are close

Luis Mendo

@TùxCräftîñg specially when written. Spoken, not so much :-)

zʏᴀʙiɴ101

In Python, how to convert an int/long to a string of a specific radix other than 2 (bin()), 8 (oct()), 10 (str()) or 16 (hex())?

Luis Mendo

9:36 AM

Also Italian. Does anyone speak Italian here?

zʏᴀʙiɴ101

holds hand down

>>> str(279077036461760328726821135497537077734L, 6)

Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    str(279077036461760328726821135497537077734L, 6)
TypeError: str() takes at most 1 argument (2 given)

TùxCräftîñg

@zʏᴀʙiɴ101 untested:

def conv(n, basestr):
    b = len(basestr)
    s = ""
    while n:
        s += basestr[n % b]
        n //= b
    return s[::-1]

call like conv(102, "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")

zʏᴀʙiɴ101

>>> conv(279077036461760328726821135497537077734L, "123456")
'31343611512335121345311334615656144355364352312133'
>>> conv(279077036461760328726821135497537077734L, "012345")
'20232500401224010234200223504545033244253241201022'
>>> int('20232500401224010234200223504545033244253241201022', 6)
279077036461760328726821135497537077734L

It works! :D

TùxCräftîñg

\o/

Anonymous

@LeakyNun Yeah I don't really know how I'd do it, either.

Anonymous

9:41 AM

I'd probably use registers to store counts, but I'm too tired to think that through

Leaky Nun

@Mego which means... revolution.

Anonymous

I'm not sure how overthrowing an existing government would help you with this challenge :P

TùxCräftîñg

^

Leaky Nun

I mean, revolutionize the language

by adding some more features to it

Anonymous

Yeah I know it needs more features

Anonymous

9:45 AM

I just don't yet have a good list of things to add

Leaky Nun

well

reduce on operator

nested function declaration

TùxCräftîñg

TIL actually/seriously dont support nested functions

Leaky Nun

@TùxCräftîñg you forgot to put TIL in front

Anonymous

@TùxCräftîñg Yeah that's a downside of using the same token to start and end functions

Anonymous

@Downgoat Gah... You still have typos in your README for Cheddar.

Anonymous

9:49 AM

@Downgoat But I'm not going to make a PR for adding one character in. In step 2 of the installation procedure, the typo is "succesfully"

Anonymous

@LeakyNun There are two different "reduce" functions: 1, 2

Leaky Nun

@Mego reduce on operator

also, convert list from base

user214599

Frainbuck

Leaky Nun

if I had either of these I would have been able to complete the answer

Anonymous

@LeakyNun What do you mean by that? Bolding part of the text doesn't help me understand what you mean any better.

Leaky Nun

9:53 AM

@Mego like, ♪- instead of `-`R

TùxCräftîñg

@Mego a thing like APL's 1 2 3+2 = 3 4 5

Anonymous

@TùxCräftîñg Try [1,2,3]2+ and tell me what you get :)

TùxCräftîñg

ah ok

Anonymous

@LeakyNun Ahh. Maybe. Maybe soon.

TùxCräftîñg

and i dont have seriously/actually

Leaky Nun

9:56 AM

@Mego again, if I had either of these I would have been able to complete the answer

@TùxCräftîñg what does this mean?

@Mego Is there currently any way to make nested function?

TùxCräftîñg

i dont have actually or seriously

Leaky Nun

Oh my god

@Mego I meant this instead

Anonymous

@LeakyNun Yes. A few ways, actually. £ converts a string to a function, so you can use string formatting functions to stick a function definition inside a string, then make it a function and call it.

Leaky Nun

@Mego good

Anonymous

Oh that

TùxCräftîñg

9:59 AM

OMG MY PROGRAM WORK \o/\o/

Anonymous

Yeah nesting a map inside another map and using enumerate is all you need

LegionMammal978

Jul 10 at 13:50, by LegionMammal978

@TùxCräftîñg well my name is Le gionMa mmal978

TùxCräftîñg

@LegionMammal978 and what is a gionMa?

LegionMammal978

Jul 10 at 13:53, by LegionMammal978

@zʏᴀʙiɴ101 gionMa is a substring of LegionMammal978.

TùxCräftîñg

.__.

Leaky Nun

10:03 AM

This is not a sentence.

LegionMammal978

@LeakyNun Why is that not a sentence?

Leaky Nun

@LegionMammal978 that's just some pixels on your monitor

The Treachery of Images

The Treachery of Images (French: La trahison des images [la tʁaizɔ̃ dez imaʒ], 1928–29, sometimes translated as The Treason of Images) is a painting by the Belgian surrealist painter René Magritte. == Description == The picture shows a pipe. Below it, Magritte painted, "Ceci n'est pas une pipe.", French for "This is not a pipe." The famous pipe. How people reproached me for it! And yet, could you stuff my pipe? No, it's just a representation, is it not? So if I had written on my picture 'This is a pipe', I'd have been lying! == Context == Magritte painted The Treachery of Images when he was 30...

LegionMammal978

@LeakyNun Dang it, been too long since I've read GEB....

TùxCräftîñg

what is the equivalent to parseInt in C?

Leaky Nun

113

Q: Converting string to integer C

I am trying to find out if there is an alternative way of converting string to integer in C. I regularly do the following in my code. char s[] = "45"; int num = atoi(s); So, is there a short way or another way?

c

TùxCräftîñg

10:05 AM

kthx

LegionMammal978

@TùxCräftîñg atoi

Leaky Nun

84

A: Converting string to integer C

There is strtol which is better IMO. Also I have taken a liking in strtonum, so use it if you have it (but remember it's not portable): long long strtonum(const char *nptr, long long minval, long long maxval, const char **errstr); EDIT You might also be interested in strtoumax and s...

LegionMammal978

^

Leaky Nun

@LegionMammal978 what's GEB?

What does the a in atoi and atob and btoa and atof really mean?

Anonymous

@LeakyNun I've got a solution in Actually in 21 bytes

Leaky Nun

10:06 AM

@Mego nice, post it

TùxCräftîñg

what is the output of atoi on a bogus value?

Fatalize

@LeakyNun Array?

LegionMammal978

@LeakyNun Pointer(=a) representing string to integer

Anonymous

@LeakyNun Gödel, Escher, Bach: An Eternal Golden Braid by Douglas Hofstadter.

LegionMammal978

@Mego you beat me to it ;)

Anonymous

10:07 AM

@LeakyNun ascii, aka a C-style string

mınxomaτ

@LegionMammal978 aka Array.

Leaky Nun

@Mego and what does that have to do with this?

TùxCräftîñg

brb in a long time

Leaky Nun

@Mego conflicting answers

Anonymous

@LeakyNun The referenced picture was in GEB

LegionMammal978

10:08 AM

@LeakyNun It references The Treachery of Images

Leaky Nun

@Mego I see

LegionMammal978

ninja'd

Leaky Nun

@LegionMammal978 thanks

Anonymous

0

A: Dijkstra's Challenge

Actually, 21 bytes ñ`i╗ñ"i╜+@;(=*"£Mi`MΣ Try it online! Thanks to Leaky Nun for making me stop being lazy and finally write this. This uses 0-indexed matrices, and takes input as a nested list. Explanation: ñ`i╗ñ"i╜+@;(=*"£Mi`MΣ ñ enumerate input `i╗ñ"i╜+@;(=*"£Mi`M ...

Leaky Nun

@Mego nice

which leads me to another suggestion: zipwith

1 2 3 +" 4 5 6 => 5 7 9

Anonymous

10:13 AM

Gah foreign language flags

Leaky Nun

@Mego nice

ven

Did I really just get flags for the Russian StackOverflow? -_-

Anonymous

@LeakyNun Do you even read commands.txt before making suggestions? :P

ven

this system is broken

Leaky Nun

@Mego Well, this is only for the operator +

ven

10:15 AM

@Mego you have your own codepage?

Anonymous

@ven I didn't make it - CP437 predates me by many years

Leaky Nun

@ven what did you say?

Anonymous

@LeakyNun So this one, then

Anonymous

@LeakyNun There was a flag in the Russian SO room

ven

@LeakyNun I got chat flags from the Russian StackOverflow

Leaky Nun

10:16 AM

@Mego whaaaaaaaaaaaaaaaaat it's how ♀ is used???????

@ven I know, but I can't read Russian

ven

@LeakyNun same.

which is why it's useless sending me those flags

Anonymous

@LeakyNun I even showed it off in snippet #15

Anonymous

Here's your exact example

Leaky Nun

@Mego thanks

@Mego How would I do a -> [a] ?

Anonymous

@LeakyNun # for single items, k for the entire stack.

Leaky Nun

10:22 AM

@Mego thanks

Anonymous

# doesn't work if a is already an iterable - it just converts it to a list (without nesting).

Anonymous

For that you'd need []o

Leaky Nun

@Mego codegolf.stackexchange.com/questions/85786/dijkstras-challenge/…

LegionMammal978

@zʏᴀʙiɴ101 What's today's Random Totalistic CA of the Day?

Leaky Nun

@Mego Does ♀ work on triads?

@LegionMammal978 what does CA mean?

Anonymous

10:25 AM

@LeakyNun I saw :P You don't need to ping me here, comments make notifications. That runs into efficiency problems with larger inputs.

LegionMammal978

@LeakyNun cellular automaton

ven

what's "1 byte" for PPCG? 8 bits?

Anonymous

@LeakyNun What do you mean?

Leaky Nun

@ven yes

ven

okay

Leaky Nun

10:25 AM

@Mego monads (functions that take 1 argument)

dyads (2)

triads (3)

Anonymous

Nope, it's a very dumb operator

Leaky Nun

@Mego then make it wise

Anonymous

There aren't many triads in Actually

Leaky Nun

you can even overload one atom

by making it detect whether the operator is a monad a dyad or a triad

zʏᴀʙiɴ101

@LegionMammal978 I was playing with OpenPGP, but this seems more important.

Leaky Nun

10:27 AM

@Mego the point is to let you potentially golf your code by checking if there's any golfable codes in my code

LegionMammal978

@zʏᴀʙiɴ101 Yes, my CPU fan is running at dangerously nonlethal speeds

Leaky Nun

@LegionMammal978 damn, the portal reference

Anonymous

There are exactly 4 triads in Actually

LegionMammal978

@LeakyNun ;)

Leaky Nun

@Mego you can still overload it

Anonymous

10:28 AM

Yeah but for 0 benefit

Leaky Nun

> Neurotoxin pressure has reached dangerously unlethal levels.

@Mego not really

you got a new space left for new functions

LegionMammal978

^

Leaky Nun

(although you haven't used up all your spaces)

Anonymous

@LeakyNun Because so many operators are already overloaded, that would be very difficult

Leaky Nun

@Mego alright

Anonymous

10:29 AM

I have 30-something unused characters, and many, many more overloads that can be used

LegionMammal978

@Mego 2-char operators perhaps?

Anonymous

The effort required is not worth the payoff

zʏᴀʙiɴ101

Random totalistic CA for the day: B35/S34.

Leaky Nun

@LegionMammal978 not really required, since he has 30-something unused characters

Anonymous

@LegionMammal978 Those are coming soon™

Leaky Nun

10:30 AM

btw, he or she?

Anonymous

I am male penguin

mınxomaτ

@Mego: A golfed Mego.

Anonymous

@mınxomaτ Impressive

Leaky Nun

@Mego alright

zʏᴀʙiɴ101

Non-explosivity proof:

x = 3, y = 3, rule = B35/S34
b2o$2o$bo!

Leaky Nun

10:31 AM

@mınxomaτ why the whitespace?

Anonymous

Also coming soon: libraries

zʏᴀʙiɴ101

@LegionMammal978 Here it is.

Leaky Nun

@Mego Do you see any golfable places in my code?

for example lr

LegionMammal978

@zʏᴀʙiɴ101 Looks pretty life-like at first with the B3/S3

Anonymous

@LeakyNun I'm gonna be asleep in like 5 minutes, so I'll have to look at it later

Leaky Nun

10:32 AM

@Mego goodnight

LegionMammal978

> <svg xmlns="http://www.w3.org/2000/svg"><path fill="#fff" d="M63.4 23.7c2.2-.5 4.4-.4 6.6-.4 4.2 0 7 3.5 10 5.7 2.8-1.4 5.2-3.6 8-5.2 7-2.2 16.2 1.2 18.5 8.8 3<...>16.2.7l-2.2-3.3 1.5-4c-2 .5-4 0-5.8-1.4.2-1.8-.5-4.2 1.4-5.2zM80.7 117c10.3-.8 21.3-2.8 29.2-10 1.8 0 3.7 0 5.5.6 2.2 1 2.6 4.2.8 5.7-1.4 1.4-3.4 1-5 1 1.7 2.2 2.2 6.2-1.2 7-7 .4-14 0-21-1.2-3-.5-6-1-8.3-3z"/></g></svg>

wat

Hmm, give me a sec...

Leaky Nun

CMC: the n-th row of the Pascal triangle (n is a positive number) (built-in is banned from this challenge)

@zʏᴀʙiɴ101 looks like doable in your language

Anonymous

@LeakyNun ╣ (I'm a rebel)

Leaky Nun

@Mego I built the challenge exactly based on this operator

s/based //

Anonymous

9 bytes without the builtin

Anonymous

10:42 AM

Probably but meh

Leaky Nun

@Mego How do you do [a]*b?

Anonymous

@LeakyNun You mean [a for a in range(b)] or [x*b for x in a]?

Leaky Nun

@Mego I mean [4]*5 == [4,4,4,4,4]

standard python notation

thought you write your language in python

Anonymous

I do, but * is vectorized for int/list args

Anonymous

So the second is what you would get with *

Leaky Nun

10:46 AM

Yes, which comes to my question

Anonymous

I need to add a "repeat n times in a list" operator, to replace the previous non-vectorized functionality

Leaky Nun

@Mego meaning this feature is completely absent?

Anonymous

You can do it, but it's a lot longer

Leaky Nun

can u show me?

Anonymous

Starting with [[a], b] as your stack (top is element 0), i@;(n(╟ should do it

Anonymous

10:50 AM

actually.tryitonline.net/#code=NVs0XWlAOyhuKOKVnw&input=

Leaky Nun

@Mego nice

Anonymous

Remind me later to add that "repeat n times and push to list" function

Anonymous

I've been meaning to add that for ages

Leaky Nun

@Mego ok

@Mego which character would you add it to?

orlp

11:05 AM

vimgifs.com

Leaky Nun

Can anyone ask a question? It's already 12 hours since the last question.

orlp

I have a difficult question that's still in the works

Leaky Nun

@orlp nice

orlp

if I have a list of n random elements each uniformly selected from [0, n), how many duplicates will I have on average?

Leaky Nun

@orlp how many duplicates does [1,1,1] count as?

orlp

11:15 AM

3

ven

after or before shaving their goats?

orlp

[1, 2, 3] is 0 duplicate

[1, 1, 3] is 2 duplicates

[1, 1, 1] is 3 duplicates

num_duplicates = lambda l: sum(bool(l.count(e) > 1) for e in l)

Leaky Nun

@orlp here

0.0

1.0

1.6666666666666667

2.3125

2.952

starting from 1

orlp

is that a simulation?

or

Leaky Nun

that's brute force

calculating from every possible array

orlp

11:22 AM

can you display it as a fraction?

zʏᴀʙiɴ101

@LegionMammal978 What's your state on search of the B35/S34 rule?

orlp

2.952 seems odd

LegionMammal978

@zʏᴀʙiɴ101 Lemme check the Catagolue...

Leaky Nun

[0, 1]

[1, 2]

[5, 9]

[37, 64]

[369, 625]

@orlp

here

orlp

those are different numbers

Leaky Nun

11:23 AM

0/1

1/2

5/9

orlp

0, 0.5, 0.5555555

LegionMammal978

@zʏᴀʙiɴ101 It's surprisingly Life-like, look here

Leaky Nun

here

[0, 1]

[1, 1]

[5, 3]

[37, 16]

[369, 125]

orlp

can you do one more

LegionMammal978

@zʏᴀʙiɴ101 Although there seem to be several still-lifes composed of chains of blocks

orlp

11:24 AM

on your machine?

Leaky Nun

[4651, 1296]

orlp

(n+1)^n - n^n

Leaky Nun

nice

orlp

now the denominator

one more :P

oh nvm

1296

oeis.org/…

oh oh

Leaky Nun

@orlp Well, I simplified them

you can unsimplify them

orlp

11:29 AM

[70993, 117649]

Leaky Nun

@orlp nice

zʏᴀʙiɴ101

@LegionMammal978 Congrats, you found a spaceship! Speed: c/9

x = 7, y = 4, rule = B35/S34
o5bo$2obob2o$b2ob2o$2b3o!

LegionMammal978

@zʏᴀʙiɴ101 yup

orlp

consistent with (n+1)^n - n^n

but that's a new sequence on OEIS!

117649 unknown term

Leaky Nun

so you got ((n+1)^n - n^n)/(n^(n-2))

orlp

11:31 AM

huh?

Leaky Nun

not?

orlp

where does the dividing term come from

Leaky Nun

never mind

orlp

oh dude

>>> factorization(117649)
{7: 6}

look at that

Leaky Nun

I said I simplified the fractions

you might get something if you unsimplify them

orlp

11:33 AM

no

that was with simplification

Leaky Nun

never mind

orlp

prob = lambda n: (n**(n-1) - (n-1)**(n-1)) / (n+1)**(n-1)

Leaky Nun

@orlp nice

orlp

LegionMammal978

@zʏᴀʙiɴ101 Full summary: xq9_36cac63 has 14 cells, a 7x4 bounding box, a speed of c/9 orthogonal, a period of 9, and a heat of 17.1.

zʏᴀʙiɴ101

11:41 AM

:O :D

LegionMammal978

Currently, it is the only spaceship known for this rule.

TùxCräftîñg

HELLO GOLFERS

zʏᴀʙiɴ101

HELLO PART OF GOLFERS

TùxCräftîñg

> If the converted value would be out of the range of representable values by an int, it causes undefined behavior.

:(

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