Arraylangs in HN

Author: kidd

2024-01-09-arraylangs-in-hn.md

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+---
+title: arraylangs in hn
+categories: [apljk]
+---
+
+A couple of links on HN this week about Array Programming Languages.
+
+# [Origins of J](https://news.ycombinator.com/item?id=38866622)
+
+Yet another one of the dissections of the J incunabulum. Some links to
+the B explanation, and one that I didn't know about:
+https://github.com/kparc/bcc/blob/master/d/sidenotes.md . Someone that
+worked with atw (Arthur Whitney) takes a dive into "understanding atw
+style". Very very cool.
+
+
+# [k on pdp11](https://news.ycombinator.com/item?id=38912406)
+
+Ktye's site has a bunch of k resources and implementations. This is
+one that I don't fully grasp ¯\_(ツ)_/¯.
+
+Ktye's site is, similar to nsl, or the old fravia's (30years ago), a
+rabbit hole from which you're not going out easily. Something I found in this dive:
+
+today: https://ktye.github.io/kdoc.htm#intro
+
+    the source code looks like go but it isn't. it's a structural assembly language that
+    also happens to satisfy the go compiler.
+    a separate compiler parses the source and writes a k table intermediate representation.
+    compilers written in k transform the IR to other languages: c go wasm wasi.
+	the fact that the source can also be directly compiled with a go compiler simplifies
+	bootstrapping testing and development by no small amount.
+
+:)
+
+# Array Programming and Lisp
+
+And an unrelated link, but I recently reread the lisp style guide from
+Norvig and Pitman, and it's always worth a
+[link](https://www.cs.umd.edu/~nau/cmsc421/norvig-lisp-style.pdf).  I
+went there after reading this [Array Languages for Lisp
+Programmers](http://archive.vector.org.uk/art10500180) classic.  The
+trigger was the lambda with default `x,y,z` params, that reminded me
+of Norvig's reader lambda `#L`.`