A Sudoku Solver in APL

Why HN readers recommended it

Strongly recommended as a beautiful demonstration that APL can be read and reasoned about step by step.

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel

Dyalog

Topic

array programming

Format

demo

Level

intermediate

HN recommenders in dataset

4

HN mentions in dataset

6

Recommendation years in dataset

2015–2022

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

• APL is great. If you haven't seen them, the late John Scholes did a number of absolutely beautiful demonstrations programming in APL[1], [2], [3]. [1]: [LINK] [2]: [VIDEO] [3]: [LINK]

• That 1975 APL demonstration is lovely. Much has been preserved in Dyalog and GNU APL - it's very interesting to see how timeless the core APL functions are. I'm very fond of a number of videos by the late John Scholes narrating APL solutions step …

• > My point was that general programming usually looks more like writing the sorting algorithm than simply calling it. Thus, I would be more interested in seeing real examples of how the properties of J allow you to write algorithms more concisely or otherwise better. …