Tube: A subway route planner in Dyalog APL (2011)

#1

Post by shawa_a_a » Sun, Nov 16, 2025, 9:39 AM UTC

Tube: A subway route planner in Dyalog APL (2011)
dfns.dyalog.com

Re: Tube: A subway route planner in Dyalog APL (2011)

#2

Post by userbinator » Fri, Nov 21, 2025, 7:04 AM UTC

The code itself is here: https://dfns.dyalog.com/tube_code.htm

I'm not an expert in APL-family languages, but they seem to be perfect for those who have developed an intense hatred of boilerplate and explicit loops.

Re: Tube: A subway route planner in Dyalog APL (2011)

#3

Post by ubercore » Fri, Nov 21, 2025, 8:03 AM UTC

Sometimes I think I understand computation, then I look at APL.

Re: Tube: A subway route planner in Dyalog APL (2011)

#4

Post by cenamus » Fri, Nov 21, 2025, 8:15 AM UTC

userbinator wrote: post #2

The code itself is here: https://dfns.dyalog.com/tube_code.htm I'm not an expert in APL-family languages, but they seem to be perfect for those who have developed an intense hatred of boilerplate and explicit loops.

Three pages, including comments. Always amazing to see that.

Re: Tube: A subway route planner in Dyalog APL (2011)

#5

Post by pjmlp » Fri, Nov 21, 2025, 8:35 AM UTC

userbinator wrote: post #2

The code itself is here: https://dfns.dyalog.com/tube_code.htm I'm not an expert in APL-family languages, but they seem to be perfect for those who have developed an intense hatred of boilerplate and explicit loops.

Array languages in general, note that NumPy traces back to array languages.

Also that is a great reason why array languages would be ideal for GPGPU, and sadly we're stuck in more classical languages with extensions for that.