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The J programming language uses "NB." for comments, just like English does. johndcook.com/blog/2021/10/2…
@JLangTips Check out my essays on DLA (diffusion-limited aggregation) in J here code.jsoftware.com/wiki/NYCJUG/20… and here code.jsoftware.com/wiki/User:Devo…
Well, I don't know if I made the deadline, but my #megafavnumber video is live! It's about solving boolean expressions with bex and #jlang, and of course the number 614889782588491410! "J and Bex vs Primorial 15" youtube.com/watch?v=gtEGiq…
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YouTube
J and Bex vs Primorial 15 | MegaFavNumbers
Iverson Ghost - an embedding of APL-like array programming features in non-APL languages and tools. analyzethedatanotthedrivel.org/2018/03/31/num…
It turns out the latest @Numberphile video on Descending Dungeon Numbers is ridiculously easy to model in #JLang: (#.10&#.inv)~/\ 10 + i. 100 Here's a quick post that digs into how it works: petecorey.com/blog/2020/08/0…
Dear #JLang Twitter, what's the best way to get a list of successive differences between list values? So for `deltas 1 2 4 7 11`, I'd expect to get `1 2 3 4`.
s=. ;:'you and and me' +---+---+---+--+ |you|and|and|me| +---+---+---+--+ s0=: 0 { s t=: 1 { s s3=: 3 { s s3, t, s0 +--+---+---+ |me|and|you| +--+---+---+ I only use J for number thoughts but wondered about strings kinda easy too #jlang
Lots of short, useful K fragments in a new article from John Earnest: beyondloom.com/blog/fragments…
I made a video about sandpiles! Also #JLang :) youtube.com/watch?v=hBdJB-…
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YouTube
sandpiles!
I took a stab at implementing the Mertens function in #JLang after watching today's @numberphile video. It can probably be golfed down quite a bit. youtube.com/watch?v=uvMGZb…
New cut of an older #JLang video: Goldbach Conjecture in J youtu.be/Dh4QKfH6fTc
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Goldbach Conjecture : Beginner J (Remastered)
2020 is the sum of the squares of four consecutive primes: 17^2 + 19^2 + 23^2 + 29^2 = 2020
4 * -/ % >: +: i.1e6
New Video: Fermat's Christmas theorem: Visualising the hidden circle in pi/4 = 1-1/3+1/5-1/7+... - youtu.be/00w8gu2aL-w - #Mathologer #TheMathologer #Math #Mathematics
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YouTube
Fermat's Christmas theorem: Visualising the hidden circle in pi/4 =...
New video: Simple Sprite Editor in J youtu.be/CzK2SazvCxM (#JLang)
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YouTube
Simple Sprite Editor in J
#jlang is crazy terse! jitwit's J solution to today's @AdventOfCode problem which was not completely trivial. This is how I feed my #impostor syndrome ;) reddit.com/r/adventofcode…
#J #JLang #AdventOfCode Day 8 finally a task for array language :) v=: ([:"."0]$~6 25,~(6*25)%~#) LF-.~fread'08.dat' f=: ]{~[:i.&1[:(=<./)([:+/[:+/=&0)"2 g=: ([:+/[:+/2=])*[:+/[:+/1=] h=: '.#'{~((]*[=2:)+[*[<2:)/ echo g f v echo h v
#AdventOfCode #J #JLang day 6 part 2 'a d'=:|:s:(3&{.;4&}.)&>cutLF CR-.~fread'06.dat' t=:3 :'if.y=s:<''COM''do.y else.(t(d i.y){a),y end.' echo(t s:<'SAN')((#@[+#@])-2*1+[:+/#@[>i.)t s:<'YOU'
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