Master Quiz

@Silas Solution found, if you're interested

@Adám This is working (I think) but it seems a lot inefficient {(⊂0 1)(⊂1 0)⍱.∊⊂∘.-⍨⍵}

Considering that, for the moment, I expect the matrix to have 12≥≢m so the positions will be around 24. (If the dimension of the vector can affect the efficiency of one method or the other one)

What about the difference between putting 0s in a matrix (that actually can be already a boolean one) and than use the function above and doing some calculations with the vector of positions?

@Adám Oh thanks, I was about to ask this

@JoshD Actually I already have positions of zeroes and the dimension of the matrix shouldn't exceed something like 30, but I always thought that checking relative positions of zeroes in a matrix would be simpler or more efficient, at least

(2(⍱/∨⍥(0∘∊)⍱⌿)⊢) 3 3⍴ 0 0 1  1 1 1  1 1 1

@Adám Shouldn't this give 1?

Is there a better way to check that there aren't consecutive zeros in a matrix (both rows and columns) than this f←(⍉∨⍥(∨/∘,0 0∘⍷)⊢)∘×?

@Adám Is this because trains aren't saved as defined but with another structure?

f ← (⊢∊∪(⌿⍨)1≠⊢∘≢⌸)⍤1
f ← ⊢∊∪⌿⍨1≠⊢∘≢⌸⍤1

Hi! I've modified this aplcart entry to find non-unique values of each row in a matrix and defined a function f, but when I run ]defs I see that f is displayed in form that I think isn't correct (although when using it, all work as desired). Am I wrong or should it be displayed like with parenthesis? [Below the function when I define it, and the result of defs]

@Adám Looks promising... I'll update you later

@Adám Should I send you an email to the one you posted on GitHub?

Ok, I've recorded a crash... Do you prefer meet on Zoom or is it better if I send you the video before?

It's pretty funny that when I was recording the screen it worked; after it crashed like five times

@Adám It's ok, but I don't know if I'll be able to find some sequence of actions that will cause the crash. Now I'm only pretty sure that it's crashing when I try to load the old session configuration

I'm joking, it just crashed another time... I've executed a bounch of ]CD and ]LINK (and it gave VALUE ERROR: Undefined name: ⎕SE.UCMD) a 1+1, I've wroted the message above and when I returned to APL it closed

Nevermind, I got it... But this time it isn't generated

@Adám Where do I find it? I don't know what is it.

@Adám I've reinstalled it yesterday, but now it restarted crashing every two lines. Maybe there's a problem when executing ]LINK or ]CD commands

@MasterQuiz And it started to crash quite frequently... Like after less that 10 lines of code

@Adám Yes, I'll do it later

It's a tradfn that creates some local variables that are accessed by an inner function

@Adám Yes

@Adám Yes

@Adám So it's possible to execute them at the same time and obtain a result in 30s?

@RikedyP This actually worked, I didn't find this page before. But is there a way to activate the shortcut with the CTRL key? Otherwise I have to change keyboard when I need to type numbers or characters...

What about Dyalog from terminal? Can it recognise keyboard shortcuts?

@dzaima I may have gotten used to use the CTRL key... So if there isn't a solution I'd rather have it on Windows

@dzaima Is the problem that it detects multiple keyboards? Should I remove one or is there the option to let it access just one keyboard? Because I don't really need both when programming in APL

In conclusion... Do you suggest to install it on Windows, or is there a way to have something good also on Fedora?

It's also possibile that I've done some errors trying to install it, cause I've tried a bounch of things, before I could get something that works in someway

Ride (installed from the latest release in GitHub) have a problem with the keyboard too: I have installed "Italian" and "English (UK)" keyboards on the system, and when I open Ride, it uses the active keyboard as normal, the other keyboard as the APL one (Like instead of pressing CTRL+R, I just have to press R), so it's a problem too, because, for example, to write five negative numbers I have to continuously change between one keyboard and the other one (or also to delete something)

Hi! I was trying to install Dyalog APL on Fedora 37, but I couldn't get something to work properly. Dyalog is from the terminal and I couldn't enable the keyboard mapping.

Should it be used when the result isn't a matrix of scalar, but a matrix of higher rank items?

Hi! In the video about Artificial Life of @RikedyP, I've seen that he uses something like f⍤1⍤1 99⍨ to do like the outer product (I guess). When is it faster then ∘.f? Cause I've tried
      ]runtime -c "×⍤1⍤0 99⍨⍳ 1e3" "∘.×⍨⍳ 1e3"
and the second one seems faster.

@LdBeth For some very complex problems I think it's legit to have a lot of lines

@LdBeth I wasn't expecting to compete

@LdBeth I have a problem solved with 21 lines in 5 functions. If I don't consider the GUI and the site written in APL

@Adám And I suppose there aren't either unofficial ones? Cause I needed the Geometry Set

Where can I find the solution to the contest of 2017?

Doesn't it stop the execution after 10s?

@Adám What can it do?

@Adám Do you know that TryAPL convert Power into this thing 'þ'? When I save a function and display it