October 2024
Intermediate to advanced
272 pages
6h 54m
English
Content preview from Seven Obscure Languages in Seven WeeksBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Deciphering APL Character Set
If someone asks you what the only thing that differentiates APL from 99.9 percent of other programming languages is, answer without hesitation: it’s APL’s character set.
The APL founding fathers were of a solid mathematical background. They intended to create a programming language resembling familiar mathematical notation as much as possible. Ideally, the user could type a formula in an APL interpreter window and instantly execute it. That’s how APL ended up with 65 special characters (in addition to the familiar alphanumerics, spaces, and punctuation), including ⊖, ⍞, ⌹, a “thumbnail” (⍝), and even a grotesque overlay of O, Q/U, and T (the end of input—see Performing Input and Output):
The extended alphabet ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.