The Nineteenth Byte

12:00 AM

@dzaima kinda like this?

@ASCII-only wait what why does reordering matter there

also no, ÷arr worked fine, if the arr was squeezed to a DoubleArr, it's the default case of falling back to the Num implementation

ASCII-only

@dzaima nah the AST just always said div is intdiv and intdiv is div before this commit

dzaima

hmm i should really implement a f/ b.. but not doing that is easier D:

ASCII-only

@dzaima :|

dzaima

i've bound my calculator keyboard button to open a dzaima/APL repl, so not being able to do a quick difference check is pretty annoying

ASCII-only

12:07 AM

@dzaima :|

Neil

@ASCII-only well, I was assuming it did the same as EvaluateVariable("HCF", [AtIndex(k, 0), AtIndex(k, 1)])

ASCII-only

@Neil :/ pretty sure that's not how it works, iirc it's more like just a function call [] is arglist

<_< when you don't even remember your own language clearly

Neil

@ASCII-only bah, well, I tried explicit arguments with

≔HCF«⎇κ▷HCF⟦κ﹪ικ⟧ι»⊞υ±¹ＦＥＮ×⁺²ι⁺³ιＦ⮌υ⊞υ±÷×ικ▷HCF⟦ικ⟧⎚ＩΣ∕¹✂υ¹

but that then divides by zero for some reason

ASCII-only

@Neil this reason :/

for some reason k appears to be 0 :/

Neil

@ASCII-only hmm, looks like it changes i which is a shame as I'm trying to use it as a loop variable

ASCII-only

12:26 AM

Using (Slice(Reverse(u), 0, Length(u), 1)) might work? idk

Neil

oh, the for loop variable also changes because it sees k is in use

no, that's not it, because if I assign to i and k before the loops, the loop variable still changes

ASCII-only

:/ maybe Charcoal needs a debugger

Οurous

12:44 AM

Is there any way I can capture a temporary file as it's written? Because I need to read something that's getting deleted instantly.

ASCII-only

@Οurous what kind of file is deleted instantly

Οurous

@ASCII-only a file containing options in a format I need to decipher, being created by mkstemp in /tmp

ASCII-only

@Οurous but what kind of OS deletes /tmp files instantly...

@Οurous ez, you just need the filename from mkstemp

Οurous

@ASCII-only Clean obsessively deletes temporary files when it's done with them

Dennis

@Οurous If you sudo chattr +a directory, you can create and modify files, but not delete them. I haven't tested doing that on /tmp though.

And just to be clear, it might not be a good idea to do it on /tmp.

ASCII-only

12:51 AM

@Dennis *is not

well, i guess it depends what permissions tmpreaper has?

Οurous

Oh so it turns out if I replace the linker with a garbage file clm crashes and doesn't delete the file. Seems like it is probably the safer option.

Οurous

1:03 AM

Ah good that just give me empty files instead of no files ._.

ASCII-only

oh wait @Neil should MapAssign take up two variables too

Dennis

@Οurous Does Clean respect $TMPDIR?

Οurous

@Dennis Doesn't seem to in this case.

I think I've found where the default options are in the wrapper though.

So I should be able to build a clm that just spits out options files.

Οurous

1:29 AM

SUCCESS! It prints "Hello, world!" and then segfaults

Οurous

2:06 AM

No apparently it's doing both and sometimes one happens before the other.

Bubbler

CMP: How would you (like to) print "Hello, World!" in a language whose only entities are points, infinite straight lines and circles on a 2D plane?

Pavel

@Bubbler Code points

Y-axis is the code point, x-axis for the order to print the points in, if that's how it works

Bubbler

The language is in definition phase, so anything you imagine is OK

Btw, a point is defined by two floating point numbers (x,y) or (r,theta)

Quintec

@Bubbler define line segments and curves bounded by the shapes you have and be able to draw the shape of the program

Bubbler

Also, each entity will likely have an associated label (any string)

@Quintec Something similar to pixel art?

ASCII-only

2:35 AM

@Pavel ew. then it's just a 2d language

a waste of program space

possibly lines could be execution paths, and points and circles used to indicate control structures/literals. possibly

Bubbler

I'm actually thinking about this: for each point requested, print its label at its (x,y) coords

ASCII-only

@Bubbler wait it has labels?

wat

@Bubbler pls elaborate

Bubbler

@ASCII-only Interesting, but not for that language. It is mainly for compass-and-straightedge, with a few extra commands to make it Turing-complete or sort

Pavel

21 mins ago, by Bubbler

Also, each entity will likely have an associated label (any string)

ASCII-only

@Bubbler hmm?

Bubbler

2:44 AM

So the "Hello World" program will work like this:

Declare a point labelled "Hello World" at coords (0,0)
Print it

ASCII-only

@Bubbler wdym by printing at x, y coords though???

Bubbler

If the point is at (4,0), prepend four spaces

For (0,1), print on the second line

Οurous

What if the point is (0.5,0) or is that invalid?

ASCII-only

> Btw, a point is defined by two floating point numbers (x,y) or (r,theta)

@Bubbler :/ what use would that be

@Bubbler what about conditional printing

(foo ? "H" : "G") + "ello, World!"

rounding, I guess? so (0.1, 0) prints to (0, 0) too

Bubbler

3:10 AM

@ASCII-only All printed points share the same coordinate system, so it's similar to ascii-art printing

ASCII-only

@Bubbler yeah, but your program would be arranged based on print location, not control flow :/

Bubbler

@ASCII-only It's just a random thought after all

I'm leaning back to simple codepoints

Not having a number or string, the printing commands would be printX, printY etc.

ASCII-only

5:01 AM

@Bubbler ????

Bubbler

> a language whose only entities are points, infinite straight lines and circles on a 2D plane

ASCII-only

@Bubbler what is printX

X and Y are two points?

Bubbler

print a point's x coordinate

ASCII-only

????

Bubbler

5:26 AM

Probably I just need to allow numbers as entities and do IO with it

RosLuP

6:39 AM

Merry Christmas and one happy new year... Thank you for all

Anush

7:41 AM

@ASCII-only I don’t think that works because in Google sheets pixels can only be whole numbers. 133 pixels for example is just under 100pt .

New Sandboxed Posts

9:34 AM

0

A: Sandbox for Proposed Challenges

Piano Scale Fingering There are 12 different major scales on the piano, which have similar, but not identical, fingering. Furthermore, the fingering for each hand is slightly different. The fingers of each hand are numbererd starting at 1 for the thumb. Each note usually takes the next finger i...

H.PWiz

10:00 AM

@ETHproductions @primo I don't actually feel like posting a Julia tip right now, especially since my "big" tip is less useful than I thought. So here are some tips (which you may already know):
Use @. (this was my big tip, but now I only use it in one answer)
You can use . for regular multi-argument functions, e.g. cld.(24,5:10) (I embarrassingly learnt this quite a while after using @. for the same purpose)
|> allows you to save on parenthesis, especially when combined with . or when using ∘s to combine functions on the right of |>

Neil

10:10 AM

@ASCII-only that doesn't make sense, MapAssign takes an operator, an optional operand, and an array; it doesn't actually evaluate anything itself.

ngn

10:27 AM

@Bubbler a circle and a line for hello: o/ and another circle for earth: o :)

FrownyFrog

very nice

ngn

(assuming the earth is round)

FrownyFrog

o/ o/|

dzaima

also compare java vs C# vs C speeds:
https://tio.run/##NY3BDoIwEETvfMUcSxoJ8ap8gieOhkMFJYulJdtCYky/vdYqe9jJvJ3JTmpTh2l4xrisN009eq2cw0WRwbsA/tR55ZNslgbM6SZaz2TGawfFoytzFNDWjGA0qE/ZPyyLzCizJGcc632Sl3KvAiwb0K8X8m5fzt/nyq6@WtIzr43g8hsIRYjxAw
https://tio.run/##NYw9C8IwEIb3/op3bClKca2dXBUKDg7iEGIsB20O7qIgkt8eY6Q33PF@PGd1Y1lcSk8lP@H81uCWvrKzUcUoPIlZ8KkADSaQxYvpjpMhX2uQTFxvMDJpUzrAzPmJYEDXF/1gqYtHxctnj123TtZtu6KAtAPoz8WyD@yVZ7e9CAV3JO9qaX55rGJKXw
https://tio.run/##RY1NDsIgEIX3PcWkRkODNY0ubb2CZyAgOMk4GKgr06uLBFJ9i/nLe9/oXpNil9IGWdPL3GCMs0F/uF8a5BkeCll08G4gizw7CDDBcP7vVOeoFVvRbsm0e9hRV6/WB1FcWFK5jTkA…

(and yes C is cheating, but that's part of the point)

primo

11:01 AM

@H.PWiz a lot of great tips, thanks!

two of those tips together just saved me 9 on pascal's triangle

H.PWiz

Which of those tricks is new to you?

primo

for regular multi-argument functions, e.g. cld.(24,5:10)

i knew that worked for operators, but not for functions

If you have (expr1)*(expr2), it can be shorter as *(expr1,expr2)

this i actually already knew, but didn't recognize any potential to save bytes

H.PWiz

Is there anything shorter than repr in Julia?

primo

repr(i)
"$(i)"

in fact, if it's a single variable reference, you can just use "$i"

H.PWiz

Nice, unfortunately not .able

primo

11:15 AM

no, i don't think it is ;)

H.PWiz

Now I don't use @. at all

primo

neither do i

.|> frequently, though

woah

FizzBuzz
1st HPWiz 59

H.PWiz

(It's not that special)

My 60 byte one was better

primo

does it use "$i" ? :p

H.PWiz

59 byte one does. 60 byte one used repr

I have a habit of saying bytes, when it really should be characters

primo

11:27 AM

same

H.PWiz

1:26 PM

The funny thing about my score here is that all I did was apply a standard (to multiple languages) golfing trick to my 41 char answer.

wizzwizz4

@H.PWiz Bytes is shorter. B is even shorter.

dzaima

1:46 PM

@wizzwizz4 characters can be golfed down to chars. and you can just not have a postfix/anything some of the time

primo

3:22 PM

@H.PWiz your 41 must be different than mine :P

i've got a different 41 now

dzaima

4:02 PM

cmp: this, this, both, or none & force factories/static genetators

Quintec

4:47 PM

@dzaima I have no idea what you’re trying to do, is B supposed to extend A?

dzaima

@Quintec oh, yep ._.

i can't write code if there's nothing to tell me that it doesn't work :p

H.PWiz

5:09 PM

@primo That's funny, because I think I stole mine from somewhere else. Mine only works in py3 though

primo

same

H.PWiz

I'm looking forward to finding out what I'm missing on emirp and happy (for JS)

primo

it must be a silly mistake

you'll likely kick yourself after

H.PWiz

presumably

H.PWiz

5:42 PM

@primo Apologies, but I should have written x_n=f(x_{n+1})

primo

i had assumed that

Anush

6:05 PM

hi all

does anyone understand how to get the domain I paid google for to point to the site I have edited using google sites?

more specifically.. I pay Google for the domain stringipedia.com every year. I have made a website using Google sites which you can be found at sites.google.com/a/stringipedia.com/stringipedia . But how do I forward www.stringipedia.com to this site?

betseg

whats that thing that called when you do a=1; b=a+1; a=2;, b becomes 3

some langs have it

dzaima

@betseg what langs have that as the default =?

betseg

i dont remember, if i knew i wouldnt be asking :P

but im sure at least one language has it as default

dzaima

in k you could have b be a "view" and it'd work like that, but that's a separate syntax from assignment

Pavel

6:33 PM

Linux 4.20 is out

Adám

@betseg Right-to-left evaluation ;-)

dzaima

6:46 PM

have i gone a bit too far not wanting to have straight-up c code in my code?
https://tio.run/##ZZHPTsMwDMbvfQqrJwdGpF2ZQIq6Tao0bRMdIHHLurB1tGmVuIw/4soL8Ia8SEnTlSFxy/fZ/tmOU6mfpW2a6E4aWOdSP612mYUr0OoArYkVmdVrpQYQkouEbBQARNNad9l9pjOQXBqyARCv57JQGPqMEM6BKr5V5M027tVtPEbmlDCGq6KiVzyKPLOErkk/wVilOf6ONoBIzGaLiKcyzzGJHyaLafcu1/uETJ2S4/jaeV1MXiqDQ@b69EBht7ql99KY8nCiO5IlYZG4o6mU7o2seLeXX@yPm@bS2qUpK88G8DrWlqROVc/xPZZlpkkZ/F@@6sjMAU4T3ihKiE4zsYC5TydeKNqVG8vlZtMFnRt8f37BVmllJCl7GQSiO4tABu8OKIC6c2L7RWWKNntT5SOKxK0zZP6YiIv1ngG2mYxdXPvJ2pLWj7w4c2Hhn3FXYxTVRh9rRsFH0/wA

dzaima

7:16 PM

@betseg personally I'd call that super lazy evaluation, but even using the word evaluation there feels wrong

Erik the Outgolfer

@betseg using a pointer to a instead of the real a in a+1... ;-)

FrownyFrog

@betseg ;-)

Erik the Outgolfer

conclusion: that thing is called ";-)"

Quintec

8:25 PM

@dzaima The funny thing is that TIO is giving you the exact error... were you just not looking at it? xD

dzaima

@Quintec I just used tio as a pastebin. i knew that neither should compile so i just didn't look at the output

Quintec

Ah

Always read error logs :P

@dzaima reminds me of tensorflow for python... everything is symbolic until you call the evaluate

El'endia Starman

9:24 PM

@Pavel It's been (almost) three hours and no one has made a "lol blaze it" joke. Huh. Are we all secretly more mature than we realize?

Skidsdev

@El'endiaStarman Oh I didn't even notice the joke, I was too blazed

Pavel

9:44 PM

@El'endiaStarman Look at how many upvotes it has on HN. Linux point releases don't normally get that many.

El'endia Starman

@Pavel Ah yes, there we go: second top-level comment is "Wake and make, dudes".

Pavel

@betseg In mathematica it's called "Delayed assignment" through the := operator.

Erik the Outgolfer

10:05 PM

so... when was the last time a challenge was posted?

Pavel

¯\_(ツ)_/¯

El'endia Starman

@EriktheOutgolfer Yesterday.

Erik the Outgolfer

(that wasn't really a question...)

El'endia Starman

How was I supposed to tell?

Erik the Outgolfer

guess the message failed to go through... :P

I meant that the rate in which challenges are posted has dropped again

El'endia Starman

10:10 PM

Well...yes...it's the holidays...

Look at the number of challenges posted on Dec 19 and 20.

Erik the Outgolfer

I think that's the reason too, yeah

New Main Posts

11:22 PM

0

Q: Encode a date in Christmas Eve format

The day this post was published was Christmas Eve. Tomorrow will be Christmas. Yesterday was Christmas Eve Eve. In two days it will be Christmas Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve Eve ...