utena
boba
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utena
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November 2022 monthly "What are you working on?" thread
Been working on specifying the Utena machine. My initial plan was to add registers and instructions to the SECD machine as I usually do, to fit everything we need to keep track of. Notably, the Self machine keeps track of both "explicit" and "implicit" self; the former used for sends which explicitly write out the receiver e.g. self blah, and the latter used for sends with no explicit receiver e.g. blah.
boba
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AG unification is the solution for type inference with scientific units
I've done a small implementation, used in type inference, in my language Boba. And you are correct, I used the linear equation solving method.
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November 2022 monthly "What are you working on?" thread
The vast majority of October's improvements on Boba were type system and runtime bug fixes. In particular, the effect handler/delimited continuation semantics were hopelessly busted beyond a few simple examples I'd fixated on.
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October 2022 monthly "What are you working on?" thread
September was another productive month for Boba, which is starting to get more 'quality of life' improvements rather than broad new features. That doesn't make the work less important: one of the bug fixes to the type inference engine last month caught a previously unseen bug in the core Boba libraries!
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Unit Type System
Also worth checking out is Adam Gundry's work on type inference for UoM types. Or, if you want an example implementation of the Abelian unification used in standard type inference extended with UoM types, you can reference my implementation, based on solving linear equations.
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September 2022 monthly "What are you working on?" thread
August was a surprisingly productive month for the Boba compiler. A few highlights:
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August 2022 monthly "What are you working on?" thread
The next large feature for Boba (a general-purpose concatenative language) is language integrated property tests.
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Soft-launch Boba: a statically-typed concatenative programming language
That's a good question! I wrote up some of my thoughts on the benefits of Go as a backend, but there's also a historical component here. The first backend I was experimenting with was compile-to-C plus a C-based runtime. Go was closer to C than C# for what I needed at the time and I thought had a nicer concurrency story as a backend.
What are some alternatives?
jevkostream.scm - (WIP) Streaming parsers for Jevko in Scheme
Forscape - Scientific computing language
parsejevko.py - Simple parser for Jevko in Python.
wort - A core concatenative programming language with variables and first-rank polymorphic type inference
parsejevko.c - Simple parser for Jevko in C.
butter - A tasty language for building efficient software. WIP
jevko.lua - A Jevko library for Lua.
awesome-low-level-programming-languages - A curated list of low level programming languages (i.e. suitable for OS and game programming)
edsl - Example of embedding TypeScript as an EDSL inside of another language
xvm - Ecstasy and XVM
nederlang - Nederlandse programmeertaal 🇳🇱. Geïnterpreteerd en met dynamische types. Met bytecode compiler en virtuele machine, in Rust.
ShnooTalk - ShnooTalk is a new programming language