The Nineteenth Byte

1:15 AM

@DLosc thanks a lot for the help

DLosc

1:38 AM

My pleasure :)

DLosc

2:07 AM

Now that it's more than just me using Pip, I think I'm going to post a tips question. Always felt weird about doing that before.

New Main Posts

2:29 AM

Q: Tips for golfing in Pip

Pip is an imperative golfing language with infix operators. It also borrows some features from functional and array programming. What general tips do you have for golfing in Pip? I'm looking for approaches and tricks that are commonly useful for code golf and are specific to Pip (e.g. "remove com...

code-golf tips

2 hours later…

4:18 AM

sounds great to me

1 hour later…

5:47 AM

@DLosc what am I doing wrong here? tio.run/##K8gs@P/fLVNHObE6IDgk0cYus/b///@JRVlF5UUA

DLosc

6:11 AM

@Razetime Ooh, that's a fun one. I think I would call that a bug in the interpreter. Since you're looping over a 0-based range, i is 0 in the first iteration. So a<>i is trying to divide a into groups of 0 characters each. Evidently, I've implemented <> such that this results in an infinite loop.

It should probably give a warning and return nil instead, like dividing by 0 would.

6:27 AM

Interesting.

@DLosc Here's another one: tio.run/##K8gs@P/fLScx0ypTW0NDI0dXRTtRU185UVNLywhEcwUEhWT@///…

It prints i when i mention it plainly, but throws a divide by zero error when I return the root of it.

PRTi works, however.

3 hours later…

A: Sandbox for Proposed Challenges

9:52 AM

@DLosc now that I did change it to a 1-indexed range and modded it a bit, it seems run forever with a negative index for the <> operator

2 hours later…

New Sandboxed Posts

12:12 PM

Number size Given a whole number \$≤ 100,\$ extend(or shorten) the number to have as many characters as it's value. Inspired by this meme. Please tell me if there is anything I left out or failed to consider. Rules Take the whole number \$n\$, and write it in words. i.e. 53 → fifty three, not fiv...

4 hours later…

New Main Posts

4:08 PM

-2

Q: (Fewest LINES, not bytes) Print plot of sin() vertically with arguments for used characters and size

The challenge is to print a vertical plot of sin() to the console. The plot should look like this: Example 1 The following parameters of the plot need to be stored in a single array of any datatype (so that you can easily change them): the character used for the x-axis. Here: | (which is vertic...

math

Newly Featured Questions

4:47 PM

Q: Find all reachable nodes in a graph

You are given a directed graph in an adjacency dictionary format. This can be whatever format is most natural for your language. For instance, in python, this would be a dictionary with keys of nodes and values which are lists of nodes which that node has an edge to. For instance: G={1: [2, 3],...

code-golf graph-theory

4:58 PM

@Bubbler You've got me in a bit of a bind with this, because I forgot that Whispers had an "Eval as Python" command, and, if I'd remembered, I would've banned its use to claim the bounty

Unfortunately, it looks like I was reminded too late :/

6 hours later…

10:58 PM

@cairdcoinheringaahing Do you have an answer to the first line of this comment?

@Bubbler To my knowledge, no, which is why I'm working on a builtin that allows you to rewrite the program during execution

Should be up on github after I add in a couple more features

However, I think you might be able to use of L and R, combined with the ∘ infix command in order to make use of While loops, I've just never tried

@cairdcoinheringaahing I thought a three-parameter While would do the job, like While <cond> <func> <init>

@Bubbler What is <init>?

<init> evaluates to a value, then it is passed as a parameter to <cond> and <func>. It is repeatedly applied <func> until <cond> becomes false.

@Bubbler Would you mind giving an example, I'm not quite sure how that would allow While loops to be mutable

11:08 PM

@cairdcoinheringaahing If init = 1, cond = x<100, func = x*2, the while loop doubles the number 1 until it gets at least 100, stopping at 128 and returning it.

So the intermediate result in the loop acts as a mutable state

@Bubbler So init is replaced by func(init) each loop

Yes.

Ok, that makes sense

Shouldn't be too difficult to add support for that, and, given the different syntax, it should be doable to keep the old syntax as well

I guess so too.

@Bubbler I just dislike making breaking changes unless I have to, that's why I mentioned it

Given that pretty much every update in Add++ was a breaking change, I've tried to be cleaner with my updates since then

11:13 PM

That is exactly how APL's dynamic repeat ⍣ works, and it's Turing-complete when combined with a digit, an arithmetic, and a bit of array manipulation functions.

I think adding it will allow simulating a FRACTRAN-like register machine

@Bubbler Translated to Whispers. Doesn't work in v2, but tested locally in my dev version of v3 and it works exactly like you described

Outputs 128 locally

Yeah, exactly like that.

I've added the same functionality to the DoWhile loops as well, just to be comprehensive

@Bubbler For the bounty, technically speaking, your eval answer does meet the rules, and is a valid answer. However, as I said, I forgot about eval, and personally, I don't consider it a fully Whispers answer. If you don't mind, I'd like to change the bounty to include the "no eval" rule. However, you did complete the bounty as it was initially put up, and if you would like me to award you the bounty, I will happily do so. Personally, I'd rather wait until a non-eval based answer is posted, but if you want me to award the bounty, I will

Although, I won't award the additional 300, only the 150

I'll try not using eval and update my answer, though I doubt I will find the minimal approach or prove something is really minimal (like the BF simulator in 8-char APL I linked isn't proven to be minimal)