The APL Orchard

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user

12:15 AM

@rak1507 Does it have anything to do with {+/¨⍵=¨,\⍵}?

rak1507

considering that is the solution (more or less), yes!

just need to trainify it

user

+/⍤=¨∘(,\)⍨?

That's a very big train

rak1507

not quite

user

⍨

9 hours later…

RGS

9:09 AM

I'm defining the "density" of a train to be the ratio of operators to functions

The train +/⍤=¨∘(,\)⍨ has density 6/3 = 2, so it is a fairly dense train.

5 hours later…

rak1507

2:14 PM

codegolf.codidact.com/posts/281384 I had a pretty shoddy 33 for this (the code I actually used to solve the problem on the site), interested in how low it can go

5 hours later…

user

6:51 PM

@rak1507 Lol I didn't read your problem properly and came up with a solution that did the exact opposite

rak1507

caird did that too

and then I edited it to make it more obvious... and then you and marshall still did it

what can I do to make it obvious that it's decryption

user

Maybe you could put that into the title of the challenge and bold it...oh wait, you already did that

Putting the challenge part at the top and making "decrypt" all caps might help

rak1507

it also doesn't help that the encryption of the last test case is also the decryption for some reason

what a coincidence

user

I guess decryption is just cutting in half and interleaving over and over, right?

dzaima

seems like decryption equals encryption for lengths which are a power of 2, or one below one

rak1507

7:01 PM

@user yea something like that

user

7:18 PM

@rak1507 Yay, I got your shoddy 33

rak1507

incredibly different to my solution lol

@user sorry to be a pedant but the last test case, you return with an extra space at the end

not sure if that should be allowed or not

user

Oops, lemme fix that

1 hour later…

Feeds

8:55 PM

Q: Read FITS files

I have some experience in several programming languages, but I would like to try APL. I'm doing some tutorials, but I want to work in a practical example. I would like to read astronomical images from a file, in FITS format (a very common format for Astronomy data), and perform some calculations ...