Comments URL: https://news.ycombinator.com/item?id=47308001

Points: 3

# Comments: 0

  {m:(x,x)#til x*x; r:til[x]-x div 2; 2(flip r rotate')/m} 

a = x^1 + x^4 + x^7 + ... = x(1 + x^3 + x^6 + ...) = x/(1-x^3)

a + a^3 + a^5 + ... = a(1 + a^2 + a^4 + ...) = a/(1-a^2)

Substitute + simplify. I don't think this is beyond a (fairly smart) elementary school student.

To me professional implies production/real world/paid work, not just an unfinished academic project.

       ]runtime -repeat=1s 'v←k1 ⋄ v⌿⍨←v≠2'

 \* Benchmarking "v←k1 ⋄ v⌿⍨←v≠2", repeat=1s
 ┌──────────┬──────────────┐
 │          │(ms)          │
 ├──────────┼──────────────┤
 │CPU (avg):│0.008491847826│
 ├──────────┼──────────────┤
 │Elapsed:  │0.008466372283│
 └──────────┴──────────────┘
       ]runtime -repeat=1s 'v←k2 ⋄ v⌿⍨←v≠2'

 \* Benchmarking "v←k2 ⋄ v⌿⍨←v≠2", repeat=1s
 ┌──────────┬────────────┐
 │          │(ms)        │
 ├──────────┼────────────┤
 │CPU (avg):│0.8333333333│
 ├──────────┼────────────┤
 │Elapsed:  │0.83        │
 └──────────┴────────────┘

Either everyone who uses array languages does actually find them readable, or they're all persistently lying for... what reason? And forcing themselves to use something they don't find readable? Why would anyone do that! Especially considering a lot of array language users are hobbyists, who have chosen to use them, it's not like they're forced to.

What do you have to gain from this stance, and why don't you believe people who tell you otherwise?

Comments URL: https://news.ycombinator.com/item?id=42440952

Points: 10

# Comments: 0