medley
BQN
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medley | BQN | |
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11 | 49 | |
353 | 827 | |
5.1% | - | |
9.2 | 8.9 | |
4 days ago | 22 days ago | |
Common Lisp | KakouneScript | |
MIT License | ISC License |
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medley
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What do people mean when they talk abou a pure lisp machine down to the silicon?
Medley, open source emulator for Xerox Interlisp-D machines: https://github.com/Interlisp/medley
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Ask HN: What software stack to select for this boot to code computer?
Your concept looks nice, it reminds me a bit of the Lisperati: https://www.hackster.io/news/the-lisperati1000-is-a-cyberdec...
So, did you consider Lisp or maybe Smalltalk? Plan 9 or Inferno might also be options.
Plan 9 comes in different variants, the "classic" one (with a Raspberry Pi port by Richard Miller) or 9front, an Inferno porting tutorial can be found at https://github.com/yshurik/inferno-rpi
Lisp and Smalltalk can run with or without Linux underneath, e.g. on the Raspberry Pi.
Bare-metal Lisp is available with interim: http://interim-os.com
Finally, bare-metal Smalltalk is available in my crosstalk system: https://github.com/michaelengel/crosstalk
Of course, Lisp and Smalltalk can also run hosted under Linux, e.g. using Squeak (https://squeak.org), Pharo (https://pharo.org) or InterLisp (https://github.com/Interlisp/medley).
Or - a crazy idea - build an emacs-only machine. That would be fun! :)
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Interesting or distinctive lisps?
Interlisp for some ideas on supporting rapid prototyping and a historical perspective.
- How practical could CLOS paired with a Smalltalk-like IDE be?
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Version Control for Structure Editing
Of historical interest was Interlisp-D as a system that did structure editing and version management. it was at the beginning of time so getting it to work again as a practical development environment is a lot of work.
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"Interlisp is a very large software system"
Measuring Lisp code in https://github.com/Interlisp/medley is harder -- wrong eol for wc
BQN
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Bare minimum atw-style K interpreter for learning purposes
I recommend checking BQN at https://mlochbaum.github.io/BQN/ and the YouTube channel code_report by Conor Hoekstra (and also "Composition Intuition by Conor Hoekstra | Lambda Days 2023"). It is well documented.
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YAML Parser for Dyalog APL
I don't put a lot of stock in the "write-only" accusation. I think it's mostly used by those who don't know APL because, first, it's clever, and second, they can't read the code. However, if I remember I implemented something in J 10 years ago, I will definitely dig out the code because that's the fastest way by far for me to remember how it works.
This project specifically looks to be done in a flat array style similar to Co-dfns[0]. It's not a very common way to use APL. However, I've maintained an array-based compiler [1] for several years, and don't find that reading is a particular difficulty. Debugging is significantly easier than a scalar compiler, because the computation works on arrays drawn from the entire source code, and it's easy to inspect these and figure out what doesn't match expectations. I wrote most of [2] using a more traditional compiler architecture and it's easier to write and extend but feels about the same for reading and small tweaks. See also my review [3] of the denser compiler and precursor Co-dfns.
As for being read by others, short snippets are definitely fine. Taking some from the last week or so in the APL Farm, {⍵÷⍨+/|-/¯9 ¯11+.○?2⍵2⍴0} and {(⍸⍣¯1+\⎕IO,⍺)⊂[⎕IO]⍵} seemed to be easily understood. Forum links at [4]; the APL Orchard is viewable without signup and tends to have a lot of code discussion. There are APL codebases with many programmers, but they tend to be very verbose with long names. Something like the YAML parser here with no comments and single-letter names would be hard to get into. I can recognize, say, that c⌿¨⍨←(∨⍀∧∨⍀U⊖)∘(~⊢∊LF⍪WS⍨)¨c trims leading and trailing whitespace from each string in a few seconds, but in other places there are a lot of magic numbers so I get the "what" but not the "why". Eh, as I look over it things are starting to make sense, could probably get through this in an hour or so. But a lot of APLers don't have experience with the patterns used here.
[0] https://github.com/Co-dfns/Co-dfns
[1] https://github.com/mlochbaum/BQN/blob/master/src/c.bqn
[2] https://github.com/mlochbaum/Singeli/blob/master/singeli.bqn
[3] https://mlochbaum.github.io/BQN/implementation/codfns.html
- k on pdp11
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Uiua: A minimal stack-based, array-based language
> Are there any other languages that use glyphs so heavily?
APL (the first, invented in the 1960s): https://en.wikipedia.org/wiki/APL_(programming_language)
BQN (a modern APL, looks like an inspiration for Uiua though I don't know): https://mlochbaum.github.io/BQN/
Too many smaller esoteric languages to count.
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Is there a programming language that will blow my mind?
Vouch for array programming, but also BQN. Modern, very good documentation, a bit less confusing than APL imo.
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K: We need to talk about group
There’s also at least BQN, which I suspect is the language used in those comments:
- APL: An Array Oriented Programming Language (2018)
- Show HN: Glidesort, a new stable sort in Rust up to ~4x faster for random data
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-🎄- 2022 Day 1 Solutions -🎄-
Well, a former Dyalog APL developer did go on to create his own language based on ideas from APL called BQN, which is touted as "an APL for your flying saucer"
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I spent the last 2 months converting APL primitives into executable NumPy
The latest APL-INSPIRED and in my opinion, best array language, is BQN: https://github.com/mlochbaum/BQN
What are some alternatives?
APL - another APL derivative
Co-dfns - High-performance, Reliable, and Parallel APL
sbcl - Mirror of Steel Bank Common Lisp (SBCL)'s official repository
Kbd - Alternative unified APL keyboard layouts (AltGr, Backtick, Compositions)
type-system-j - adds an optional type system to J language
TablaM - The practical relational programing language for data-oriented applications
futhark - :boom::computer::boom: A data-parallel functional programming language
j-prez
array - Simple array language written in kotlin
april - The APL programming language (a subset thereof) compiling to Common Lisp.
jelm - Extreme Learning Machine in J
pyret-lang - The Pyret language.