5 ms·

APL a Day

83 points by lelf 7y ago

lalaithion 7y ago
This is great! I do think you have a formatting error. For me, all matrices appear on one row, like so: > 0 1 2 3 4 5 6 7 8 > The above matrix contains 9 elements arranged into 3 rows and 3 columns. You also use / without defining what it does, in day 4.
kelas 7y ago
well done aaron https://kparc.io/kc https://kparc.io/kc
- RodgerTheGreat 7y ago
  Neat. I didn't know there was a WASM build of Shakti on the web.
  - kick 7y ago
    The kparc.io site has a surprising amount of nice content on it, presented very nicely. https://kcc.kparc.io/ https://kcc.kparc.io/ https://ref.kparc.io/ https://ref.kparc.io/
    - ngcc_hk 7y ago
      Strangely the ref site has expired cert
      - kick 7y ago
        Why strange? SSL cert management is a bugbear, and wildcards aren't common.
      - chrispsn 7y ago
        Try this: https://kparc.github.io/ref/ https://kparc.github.io/ref/
  - chrispsn 7y ago
    It's really neat! Note this is k7 - dev has since moved to k9. k7 will be remembered as the 'Unicode symbols' experiment of k; for example nulls were slashed zeroes (Ø) and pi was, well, the pi symbol. k9 dropped them as they're not easy to type across all OSes without config or a dedicated editor. k9 also has the nice dedicated 'cut' symbol, and a few other improvements, but it's not done yet.
    - chrispsn 7y ago
      BTW, a little easter egg that the creators built in: try Ctrl-[ and ] at console.
threatofrain 7y ago
What's the most popular modern APL?
- nordsieck 7y ago
  > What's the most popular modern APL? Probably q simply due to its connection to kdb
- jolux 7y ago
  Haskell… (half kidding)
- Jhsto 7y ago
  Please do correct me if I'm wrong, but I've just recently researched APL and it seems like beyond J there really isn't anything else. There's a lot of recent research however, so maybe soon you'll see something new, but in general array based languages seem very little used and studied.
  - 7thaccount 7y ago
    Dyalog APL has a lot of modern goodies, also J, and K.
  - kick 7y ago
    proprietary: k7, k2/k3 (very frequently used so including them separately), dyalog APL, APL2 (still shipping), APL2000, D not proprietary: NARS, ngn/k, J, klong, aplette, gnu apl, kona javascript: ngn/apl, oK calculator (free software): ivy dead but the body's still warm (free software): xxl, nial, dead but the body's still warm (proprietary): aplx, a+ There's a bunch missing here because everyone alive has written an APL interpreter at some point (Ken Thompson did for example but it's ancient history and has a few descendents), but listing all of them would take hours. Especially if we're getting into historical stuff. They've been pretty heavily studied, though, certainly: https://vector.org.uk https://vector.org.uk (APL journal going back almost forty years) If you have access to the old IBM journal, you'll find stuff that's past fifty, the first book on it is 58, and it itself is past sixty now.
phaedryx 7y ago
APL != Apple Public License APL != American Power & Light etc. It is https://en.wikipedia.org/wiki/APL_(programming_language) https://en.wikipedia.org/wiki/APL_(programming_language) For those of you who were ignorant like I was.
- phaedryx 7y ago
  sigh downvotes for trying to be helpful.
  - kick 7y ago
    While I can't speak for people who downmodded it initially, it was probably downmodded because "sarcastic acronym guessing game" is a trope on this site that people see frequently and are getting tired of: it seems like it at first glance, especially given that there were already people implying it was a programming language by the time you sent your comment. However, APL is niche, so you probably were well-intentioned rather than playing a part in that. It's hard on Internet forums to see if something is genuine or sarcastic, so sometimes even the nicest comments get downmodded. That said, complaining about them only invites more. You have a higher chance of getting back to a positive score by not bringing it up, and it's against the News Guidelines to, anyway: Please don't comment about the voting on comments. It never does any good, and it makes boring reading. https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html If you're consistently posting good, helpful or kind stuff to the site, it almost always outweighs downmodded comments in due time, so don't sweat it!
    - ColanR 7y ago
      Only reason I upvoted his comment is because he pointed out his helpful intention and the resulting downvotes.
    - gpvos 7y ago
      The programming language is the first thing I think of when I see "APL", and the others are unknown to me, but I still would have upvoted if phaedryx had just posted "APL = https://en.wikipedia.org/wiki/APL_(programming_language)" https://en.wikipedia.org/wiki/APL_(programming_language)" or similar, and put the rest of the post below that. Starting out with the wrong hits is very distracting. The self-deprecation at the end is also totally unnecessary.
ngcc_hk 7y ago
Quite interesting but I just hope if they start with an open one.
LessDmesg 7y ago
An APL a day keeps the Python away, huh?

83 points by lelf 7y ago

This is great! I do think you have a formatting error. For me, all matrices appear on one row, like so: > 0 1 2 3 4 5 6 7 8 > The above matrix contains 9 elements arranged into 3 rows and 3 columns. You also use / without defining what it does, in day 4.

kelas 7y ago

well done aaron https://kparc.io/kc https://kparc.io/kc

RodgerTheGreat 7y ago
Neat. I didn't know there was a WASM build of Shakti on the web.
- kick 7y ago
  The kparc.io site has a surprising amount of nice content on it, presented very nicely. https://kcc.kparc.io/ https://kcc.kparc.io/ https://ref.kparc.io/ https://ref.kparc.io/
  - ngcc_hk 7y ago
    Strangely the ref site has expired cert
    - kick 7y ago
      Why strange? SSL cert management is a bugbear, and wildcards aren't common.
    - chrispsn 7y ago
      Try this: https://kparc.github.io/ref/ https://kparc.github.io/ref/
- chrispsn 7y ago
  It's really neat! Note this is k7 - dev has since moved to k9. k7 will be remembered as the 'Unicode symbols' experiment of k; for example nulls were slashed zeroes (Ø) and pi was, well, the pi symbol. k9 dropped them as they're not easy to type across all OSes without config or a dedicated editor. k9 also has the nice dedicated 'cut' symbol, and a few other improvements, but it's not done yet.
  - chrispsn 7y ago
    BTW, a little easter egg that the creators built in: try Ctrl-[ and ] at console.

threatofrain 7y ago

What's the most popular modern APL?

nordsieck 7y ago
> What's the most popular modern APL? Probably q simply due to its connection to kdb
jolux 7y ago
Haskell… (half kidding)
Jhsto 7y ago
Please do correct me if I'm wrong, but I've just recently researched APL and it seems like beyond J there really isn't anything else. There's a lot of recent research however, so maybe soon you'll see something new, but in general array based languages seem very little used and studied.
- 7thaccount 7y ago
  Dyalog APL has a lot of modern goodies, also J, and K.
- kick 7y ago
  proprietary: k7, k2/k3 (very frequently used so including them separately), dyalog APL, APL2 (still shipping), APL2000, D not proprietary: NARS, ngn/k, J, klong, aplette, gnu apl, kona javascript: ngn/apl, oK calculator (free software): ivy dead but the body's still warm (free software): xxl, nial, dead but the body's still warm (proprietary): aplx, a+ There's a bunch missing here because everyone alive has written an APL interpreter at some point (Ken Thompson did for example but it's ancient history and has a few descendents), but listing all of them would take hours. Especially if we're getting into historical stuff. They've been pretty heavily studied, though, certainly: https://vector.org.uk https://vector.org.uk (APL journal going back almost forty years) If you have access to the old IBM journal, you'll find stuff that's past fifty, the first book on it is 58, and it itself is past sixty now.

phaedryx 7y ago

APL != Apple Public License APL != American Power & Light etc. It is https://en.wikipedia.org/wiki/APL_(programming_language) https://en.wikipedia.org/wiki/APL_(programming_language) For those of you who were ignorant like I was.

phaedryx 7y ago
sigh downvotes for trying to be helpful.
- kick 7y ago
  While I can't speak for people who downmodded it initially, it was probably downmodded because "sarcastic acronym guessing game" is a trope on this site that people see frequently and are getting tired of: it seems like it at first glance, especially given that there were already people implying it was a programming language by the time you sent your comment. However, APL is niche, so you probably were well-intentioned rather than playing a part in that. It's hard on Internet forums to see if something is genuine or sarcastic, so sometimes even the nicest comments get downmodded. That said, complaining about them only invites more. You have a higher chance of getting back to a positive score by not bringing it up, and it's against the News Guidelines to, anyway: Please don't comment about the voting on comments. It never does any good, and it makes boring reading. https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html If you're consistently posting good, helpful or kind stuff to the site, it almost always outweighs downmodded comments in due time, so don't sweat it!
  - ColanR 7y ago
    Only reason I upvoted his comment is because he pointed out his helpful intention and the resulting downvotes.
  - gpvos 7y ago
    The programming language is the first thing I think of when I see "APL", and the others are unknown to me, but I still would have upvoted if phaedryx had just posted "APL = https://en.wikipedia.org/wiki/APL_(programming_language)" https://en.wikipedia.org/wiki/APL_(programming_language)" or similar, and put the rest of the post below that. Starting out with the wrong hits is very distracting. The self-deprecation at the end is also totally unnecessary.

ngcc_hk 7y ago

Quite interesting but I just hope if they start with an open one.

LessDmesg 7y ago

An APL a day keeps the Python away, huh?