#APLMonday
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dyalog.bsky.social
Just another mediocre train... #APLMonday #Dyalog #APL
What does the following dyadic mathematical function compute when given an integer scalar left argument and a numeric array right argument? (+⌿÷⊣)
January 6, 2025 at 2:14 PM
dyalog.bsky.social
This week's #APLMonday might seem a little complex...

Experiment using TryAPL: tryapl.org?clear&q=(%E2...

#Dyalog #APL
What does the following monadic set function return when applied to a numeric vector argument? (⊢~+)
March 3, 2025 at 2:43 PM
dyalog.bsky.social
This one is a keeper...

#APLMonday #Dyalog #APL
What does the following dyadic selection function do when given vector arguments?
May 5, 2025 at 1:04 PM
dyalog.bsky.social
First and foremost… #APLMonday #Dyalog

Let us know what you think in the comments. You can try solutions out at tryapl.com #LearnAPL

For more #APL fun, try challenge.dyalog.com
What does the following dyadic lookup function determine when given any array arguments? (⊃⍷)
December 2, 2024 at 1:57 PM
dyalog.bsky.social
What comes around goes around – like this one! #APLMonday #Dyalog #APL
What does the following monadic index generation function compute when given any array? {0~⍨,⍉⊢⌸⍵}
September 1, 2025 at 1:23 PM
dyalog.bsky.social
All good answers to this one are valid. #APLMonday #Dyalog #APL
What does the following dyadic structural function compute when given vector arguments? ∘.{⍺⍵}
September 22, 2025 at 1:50 PM
dyalog.bsky.social
Do you have any idea…

What does the following monadic Boolean function determine when given a Boolean vector argument? ∨/

#APLMonday #Dyalog #APL #LearnAPL
What does the following monadic Boolean function determine when given a Boolean vector argument? ∨/
February 17, 2025 at 2:05 PM
dyalog.bsky.social
On a related node... #APLMonday #Dyalog #APL
What does the following monadic Boolean function compute when given a square Boolean matrix? (∨.∧⍨∨⊢)⍣≡ V20.0 will also support: ∨.∧⍨⍛∨⍣≡
June 16, 2025 at 1:12 PM
dyalog.bsky.social
You have your work cut out for you this #APLMonday...

Let us know what you think in the comments. You can try solutions out at tryapl.com

For more #APL fun, try challenge.dyalog.com

#Dyalog #LearnAPL #ArrayProgramming #Programming #SoftwareDeveloper
What does the following dyadic structural function compute when given an integer vector left argument and any vector right argument? {⍵⊆⍨⍸⍺}
December 23, 2024 at 2:26 PM
dyalog.bsky.social
Today's #APLMonday is deceptively simple... #Dyalog #APL #LearnAPL For more APL problems, try challenge.dyalog.com
What does the following monadic function give for any array? ≠⍨
October 7, 2024 at 1:06 PM
dyalog.bsky.social
It might look drunk, but can be handy...

#APLMonday #APL #LearnAPL #ArrayProgramming #Dyalog

For more APL fun, try challenge.dyalog.com
What does the following monadic structural function compute when given any rank 3 array argument? {⍉⍪⍉⍵}
January 13, 2025 at 2:14 PM
dyalog.bsky.social
Considering how many of these we've done already...#APLMonday

Let us know what you think in the comments. You can try solutions out at tryapl.com #LearnAPL

For more #APL fun, try challenge.dyalog.com
What does the following humorous function answer when given any array argument or arguments? {⍎⊖⍕⊃⊂|⌊-*+○⌈×÷!⌽⍉⌹~⍴⍋⍒,⍟?⍳0}
December 9, 2024 at 2:08 PM
dyalog.bsky.social
This one might have you cornered...

What does the following monadic function determine when given a numeric matrix argument? {⍵≡⍵×∘.≤⍨⍳≢⍵}

Let us know what you think! Test your solutions at https://tryapl.com

#APLMonday #APL #Dyalog #LearnAPL #ArrayProgramming
What does the following monadic function determine when given a numeric matrix argument? {⍵≡⍵×∘.≤⍨⍳≢⍵}
January 20, 2025 at 1:55 PM
dyalog.bsky.social
It's time for another #APLMonday challenge! #Dyalog #APL
Let us know what you think in the comments.

You can try solutions out at www.tryapl.com

For more #APL fun, try challenge.dyalog.com
October 28, 2024 at 2:06 PM
dyalog.bsky.social
I'd put this one in your table of useful operations. #APLMonday #Dyalog

What does the following monadic structural function compute when given any matrix argument? (↓⍉)

Let us know what you think in the comments. You can try solutions out at tryapl.com

For more #APL fun, try challenge.dyalog.com
What does the following monadic structural function compute when given any matrix argument? (↓⍉)
November 25, 2024 at 2:09 PM
dyalog.bsky.social
Don’t look so surprised!

#APLMonday #Dyalog #APL
What does the following monadic data conversion function compute when given a numeric array?
June 30, 2025 at 2:07 PM
dyalog.bsky.social
Anything goes! #APLMonday #Dyalog #APL
What does the following monadic selection function compute when given any vector? (?∘≢⊃⊢) v20.0 will also support: ?∘≢⍛⊃
June 23, 2025 at 2:36 PM
dyalog.bsky.social
This one might not be the usage you're accustomed to #APLMonday

Let us know what you think in the comments. You can try solutions out at www.tryapl.com

For more #APL fun, try challenge.dyalog.com

#Dyalog #APL #LearnAPL
What does the following dyadic mathematical function compute when given a collection of Boolean vectors (as rows in a matrix) as left argument and a numeric vector as right argument? +.×
November 11, 2024 at 2:06 PM
dyalog.bsky.social
With this one, you might need to take a side. #APLMonday
What does the following monadic text function do when given a character array? {⍵⌽⍨+/∧\' '=⍵}
August 18, 2025 at 1:10 PM
dyalog.bsky.social
Try your hand on this unique train...

Let us know what you think in the comments. You can try solutions out at tryapl.com

For more #APL fun, try challenge.dyalog.com

#APLMonday #Dyalog #LearnAPL #ArrayProgramming #Programming
What does the following monadic set function determine when given a any array argument? (0∊≠)
December 30, 2024 at 1:56 PM
dyalog.bsky.social
Alternatively… #APLMonday #Dyalog #APL

Experiment using TryAPL: tryapl.org?clear&q=%7B%...
What does the following monadic boolean function compute when given an integer vector argument? {≠\(⍳+/⍵)∊+\1,⍵}
March 17, 2025 at 2:37 PM
dyalog.bsky.social
#APLMonday week 17! #dyalog #APL #LearnAPL
What does the following dyadic structural function create when given two vector arguments? (,⍤0)
June 17, 2024 at 2:27 PM
dyalog.bsky.social
And what about this? #APLMonday #Dyalog #APL
What does the following dyadic Boolean function compute when given positive integer array arguments? {2⊥∧/2⊥(⍣¯1)⍺,(⍤0)⍵}
April 21, 2025 at 1:47 PM
dyalog.bsky.social
Join us in this #APLMonday challenge...

Let us know what you think in the comments. You can try solutions out at tryapl.com

For more #APL fun, try challenge.dyalog.com

#Dyalog #LearnAPL #APL
What does the following dyadic structural function determine when given a vector of vectors right argument and a vector left argument? {⊃⍪/1↓,(⊂⍺),⍪⍵}
December 16, 2024 at 2:11 PM
dyalog.bsky.social
#APLMonday week 14! #dyalog #APL #LearnAPL
What does the following dyadic Boolean function generate when given positive integer scalar arguments? (×⍴⊢↑1⍨)
May 27, 2024 at 1:13 PM