The Nineteenth Byte

2:15 AM

@cairdcoinheringaahing

Where can I find documentation for Levels?

Also, do watch Schindler's List

@Bubbler question is fine, title can be cover the floor tiles with dominoes or something like that, if you do want to change it. I don't mind it much, it isn't inaccurate.

sporeball

5:45 AM

hmm

Lyxal

What?

sporeball

i can either save 2 bytes on many of my answers by making the input null-terminated instead of STX-terminated, or i can ignore

what to do e.e

Lyxal

Ignore what?

sporeball

well, the byte savings

Lyxal

Why are they stx terminated anyway?

sporeball

5:49 AM

i'd rather not push 20 of my answers to the recent list on main in what is basically a message of "oops i finally realized you can write null bytes if you try hard enough"

Lyxal

@sporeball do it gradually

2 a day

Or 3 even

sporeball

i'll give you the honest answer: the inputs are STX-terminated because i can't use Alt+0000 to write null bytes in Notepad++, and i decided STX, which i can write, would be a nice one to choose

i really should have switched back to vim a long time ago now, that can do it easy

Lyxal

@sporeball brug

Use newline terminated input like normal people

Like pretty much every single esolang on cgcc

naz is written in js yes? So Multiline input can be given as a raw js string with "\n" escapes

sporeball

it doesn't work that way

the r command pops the nth character from the input file. 1r1o on an input file containing \n will take it literally and output a backslash

yes i just edited that message four times and gave up on formatting the end of it

Lyxal

@sporeball okay then. Well, just read to EOF

sporeball

6:03 AM

can't do that either :^)

if the call to input.charCodeAt(-1 + num) returns NaN then the interpreter throws input string not long enough

Lyxal

Read the entire file

Into a string

And index said string

@sporeball what, ending it with STX fixes this issue somehow?

sporeball

naz's only datatype is the signed integer

ending it with STX means i can store 2 in a variable, then while looping over the input file, check if the register is equal to that variable after every byte i read

if it is, i immediately goto a different function, therefore avoiding reading a byte that isn't there and getting input string not long enough

Lyxal

6:19 AM

```
input_string = input_file.read()
input_string = map(ord, list(input_str))
```

That but in js

sporeball

6:30 AM

this just creates a list of the character codes, yes?

so indexing the list out of its range will throw IndexError in Python and return undefined in JavaScript

Lyxal

@sporeball and that's why you manually check to see if the indexing value is inside the list

@sporeball yes, which is what you're doing but converts the entire file automatically

And more importantly, it reads the entire file until EOF

sporeball

i think if i'm understanding you correctly i'm doing that anyway?

the input file is read until EOF using fs, the contents are stored as a string in a variable called input, and characters are popped from that

i thought that immediately throwing when you index out of range was the sensible thing to do, because naz sets the register equal to the character code at the index whenever you index correctly, and NaN isn't a character code, so you can't (shouldn't) do the same when you index incorrectly

NaN can't be coerced to a number by doing arithmetic on it, so unless you load another variable into the register your program can't do anything meaningful anymore

that feels wrong

Bubbler

7:05 AM

@sporeball Well, you could apply x | 0 to coerce NaN to a 0 and leave integers intact

sporeball

huh, TIL

caird coinheringaahing

@Razetime Right now, probably in the Levels source code. Don't think I ever got round to writing it up

Razetime

aw man

I guess I might try with Add++ then

New Main Posts

7:50 AM

2

Q: Maximal saturated domino covering of a rectangle

Inspired by this OEIS entry. Background A saturated domino covering is a placement of dominoes over an area such that the dominoes are completely inside the area, the dominoes entirely cover the given area, the dominoes may overlap, and removal of any domino reveals an uncovered cell (thus faili...

caird coinheringaahing

9:19 AM

@Razetime Tbf the list of commands in Levels do all have basic descriptors of what they do (e.g.), but there aren't any full docs detailed how the language works and what commands are available

Razetime

yep the list is fne but i have no idea how the IP or anythin works

I can tryy reading through Add++ docs however

that is, if i can figure out a proper algorithm in the first place

my best bet is probably using charcoal

caird coinheringaahing

@Razetime Man, I'm reading through the Add++ docs and realising just how bad I am at writing them

There's nothing at all on the best part of the language: functions

Lyxal

9:35 AM

@cairdcoinheringaahing why is the Tio HW for Add++ so convoluted?

caird coinheringaahing

@Lyxal Cause I haven't updated it in about 3 years

Lyxal

But why didn't Dennis use a shorter version?

Try it online!

^ default

caird coinheringaahing

in talk.tryitonline.net, Oct 26 '17 at 22:54, by caird coinheringaahing

@Dennis Would you mind changing the Add++ Hello, World! to this, after pulling it once more?

Lyxal

Try it online!

^shorter

caird coinheringaahing

You should've seen it before then, it was a mess :P

Lyxal

9:38 AM

@cairdcoinheringaahing may I see it?

caird coinheringaahing

@Lyxal I can try and find it

Lyxal

Or Try it online! for the trailing newline

@cairdcoinheringaahing I'd appreciate that

caird coinheringaahing

@Lyxal Shortest

Lyxal

What does the L do?

caird coinheringaahing

Anonymous function, which the -i flag tells the program to call implicitly

Lyxal

9:44 AM

Ah

Part of the whole "parts missing from the docs" thing

caird coinheringaahing

Yep, really not my best part of making languages :/

"I can understand them, so everyone should be able to"

Razetime

@cairdcoinheringaahing I want to get itto work

Flattening the cube is difficult, but maybe I can find other question to try it on

Lyxal

@cairdcoinheringaahing too relatable

Way too relatable

Razetime

your docs are pretty cool

@cairdcoinheringaahing soo where can i get a good understanding of functions

caird coinheringaahing

@Lyxal Try it online!

Lyxal

9:49 AM

@Razetime *we

Razetime

sure why not

Lyxal

@cairdcoinheringaahing amazing. Absolutely beautiful

caird coinheringaahing

@Razetime I'd recommend either asking me, or checking out my answers on PPCG: codegolf.stackexchange.com/…

Razetime

this is gonna take a while lol

caird coinheringaahing

@Lyxal Yep, glorious

Razetime

9:50 AM

do you mind if we add pages to your wiki on Add++?

Lyxal

Yeah, is that okay with you?

caird coinheringaahing

@Razetime Feel free to do so. I'll be happy to edit/fix anything that's incorrect

Rn I just don't have the time to fully write up a doc

Razetime

sure, sure

Just need wiki access

Lyxal

Same

caird coinheringaahing

I trust the two of you to not vandalise the repo, so I'll just make you collaborators

@Lyxal What's your github?

Lyxal

9:53 AM

Lyxal

caird coinheringaahing

@Lyxal It gets even better if you understand how it works: P outputted with a newline, and no command didn't, so & takes x, converts to a character and concatenates it to the "string". If the "string" wasn't empty when P is run, it outputted that rather than x

Lyxal

@cairdcoinheringaahing even better

caird coinheringaahing

Add++ was like the first proper language I made, so as I've got more and more experience with language design, it's had more and more additions to it. Reading the versions' source code is literally like watching me learn to code in real time :P

Razetime

impressive

@cairdcoinheringaahing mine is @Razetime

caird coinheringaahing

@Razetime Yeah, I saw that when you started following me (why I didn't ask) :P

Razetime

10:05 AM

lol

@cairdcoinheringaahing is there any guide for non verbose coding?

or is it just better to code in verbse ad convert

caird coinheringaahing

When using functions? Personally I never use verbose coding (and IIRC its super buggy because of that), so I just write it shorthand and use the commands dict ti get what commands I need

@Lyxal Something similar, but much worse

Could probably be golfed by now, but I'm happy to leave it as is :P

Razetime

10:28 AM

cool, I'll make a table of operators and stuff

@cairdcoinheringaahing @Lyxal just made a room so we don't spam this place with our questions

Add++

A place for the discussion of the Add++ programming language, ...

caird coinheringaahing

Oh cool

caird coinheringaahing

10:59 AM

Did we ever follow up on Best of 2019?

Razetime

11:18 AM

@cairdcoinheringaahing oh, theres awards for stuff. nice.

We should be finishing it, already more than halfway through 2020

Lyxal

@Razetime the story of pretty much ever best of

Razetime

welp didnt know that

but, y'know should finish it by like march or something

Lyxal

*every best of

Well, at least 2019

sporeball

5:48 PM

last call for feedback on sporeball numbers

New Main Posts

6:10 PM

0

Q: Convert strings to BF!

Let us be honest, you do know all about the BF language! If you do not, you may read the actual article. Task The task is a quite simple one! You have to write a program which takes in input, and the outputs a valid BF program that outputs the input string. (ANY valid brainfuck program satisfies)...

code-golf string brainfuck

NieDzejkob

7:07 PM

I'm looking for an esoteric programming language I could write a compiler for. I'd want the language to be able to randomly access and mutate an array-like data structure in O(log n) or better, preferably without any significant trickery in the implementation. I'd guess that there are many people more knowledgeable in esoteric languages than me in here, so - any ideas on the top of your mind?

I've considered Shakespeare Programming Language, random access requires shuffling data between stacks. Mornington Crescent is only turing complete because of bignums and string munching. Chef allows you to access elements deep into its stacks, but the ROLL requires a large memcpy, and restoring the state is also not trivial, so one would probably end up simply copying entire stacks.

Seriously exposes Python's eval, which is not ideal. In general, the large "standard library" is not something I'm keen on here. I couldn't find anything that would let me mutate a list.

Befunge is actively hostile to compilation. Hexagony requires executing O(n) instructions to get to a specific place in memory.

Hmm, 05AB1E has ǝ