Glide
ocaml
Glide | ocaml | |
---|---|---|
13 | 119 | |
2 | 5,183 | |
- | 1.1% | |
10.0 | 9.9 | |
over 1 year ago | 3 days ago | |
C++ | OCaml | |
GNU General Public License v3.0 only | GNU General Public License v3.0 or later |
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Glide
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How do you deal with lack of motivation?
I've added the code to the repo: https://github.com/dibsonthis/Glide/blob/main/imports/csv.gl
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Glide - code now on Github
So for the past few months, I've been working on my data transformation language Glide. It started off as a simple toy PL that aimed to do some basic data transformation through piping. But as time went on, more and more features were added and the implementation became more complex.
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Glide and its type system
I'm about 70% through writing Glide's new type system. Here are some examples:
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List comprehension syntax
Hey all, I'd like to hear your opinions on Glide's list comprehension syntax:
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My new type system caught a bug in my own standard library that would have ruined someone's day at runtime
I was hesitant to spend time building a proper type system originally, but I'm so glad I decided to do it. Having a typing stage in the pipeline has made my language (Glide) feel so much closer to a real language than the toy language I've always seen it as.
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Implemented a compile time type system for Glide
Just finished the core implementation of a compile time type system for my language Glide.
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Glide + wiki documentation
Link to documentation: https://github.com/dibsonthis/Glide/wiki
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Readability vs. Performance
I'm working on building out the csv module in my language Glide and I'm at a bit of a crossroads. I initially envisioned the csv module to build a list of objects out of the data and the user manipulates those objects directly and then can serialise them back to csv. However, I've also come up with a different solution that doesn't involve objects, but only flat lists.
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Best use of time: Building a Static type system in the compiler or a Dynamic type system in the language?
My language Glide is currently dynamically typed, however I've been trying to build some sort of type system for it. I chose to go with a dynamic type system because I felt it would be a lot easier to get going, and can be written directly in the language. But I've also noticed that I could be using this time and effort on implementing a "real" static type system in the compiler itself. But I'm unsure which direction I want to take.
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How do you determine what goes into the standard library?
So I've noticed the more code I write in my language (Glide), the bigger my "standard library" gets. And by standard library, I mean a bunch of different files that contain really handy functions, i.e list functions like map, filter, reduce and string functions like to_chars, split etc.
ocaml
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Autoconf makes me think we stopped evolving too soon
> OCaml’s configure script is also “normal”
If that’s this OCaml, it has a configure.ac file in the root directory, which looks suspicious for an Autotools-free package: https://github.com/ocaml/ocaml
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The Return of the Frame Pointers
You probably already know, but with OCaml 5 the only way to get flamegraphs working is to either:
* use framepointers [1]
* use LBR (but LBR has a limited depth, and may not work on on all CPUs, I'm assuming due to bugs in perf)
* implement some deep changes in how perf works to handle the 2 stacks in OCaml (I don't even know if this would be possible), or write/adapt some eBPF code to do it
OCaml 5 has a separate stack for OCaml code and C code, and although GDB can link them based on DWARF info, perf DWARF call-graphs cannot (https://github.com/ocaml/ocaml/issues/12563#issuecomment-193...)
If you need more evidence to keep it enabled in future releases, you can use OCaml 5 as an example (unfortunately there aren't many OCaml applications, so that may not carry too much weight on its own).
[1]: I haven't actually realised that Fedora39 has already enabled FP by default, nice! (I still do most of my day-to-day profiling on an ~CentOS 7 system with 'perf --call-graph dwarf', I was aware that there was a discussion to enable FP by default, but haven't noticed it has actually been done already)
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Top Paying Programming Technologies 2024
11. OCaml - $91,026
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OCaml: a Rust developer's first impressions
> It partially helps since it forces you to have types where they matters most: exported functions
But the problém the OP has is not knowing the types when reading the source (in the .ml file).
> How would it feels like to use list if only https://github.com/ocaml/ocaml/blob/trunk/stdlib/list.ml was available,
If the signature where in the source file (which you can do in OCaml too), there would be no problem - which is what all the other (for some definition of "other") languages except C and C++ (even Fortran) do.
No, really, I can't see a single advantage of separate .mli files at all. The real problém is that the documentation is often worse too, as the .mli is autogenerated and documented afterwards - and now changes made later in the sources need to be documented in the mli too, so anything that doesn't change the type often gets lost. The same happens in C and C++ with header files.
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Bringing more sweetness to ruby with sorbet types 🍦
If you have been in the Ruby community for the past couple of years, it's possible that you're not a super fan of types or that this concept never passed through your mind, and that's totally cool. I myself love the dynamic and meta-programming nature of Ruby, and honestly, by the time of this article's writing, we aren't on the level of OCaml for type checking and inference, but still, there are a couple of nice things that types with sorbet bring to the table:
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What is gained and lost with 63-bit integers? (2014)
Looks like there have been proposals to eliminate use of 3 operand lea in OCaml code (not accepted sadly):
https://github.com/ocaml/ocaml/pull/8531
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Notes about the ongoing Perl logo discussion
An amazing example is Ocaml lang logo / mascot. It might be useful to talk with them to know what was the process behind this work. The About page camel head on Perl dot org header is also a pretty good example of simplification, but it's not a logo, just a friendly illustration, as the O'Reilly camel is. Another notable logo for this animal is the well known tobacco industry company, but don't get me started on that (“good” logo, though, if we look at the effectiveness of their marketing).
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What can Category Theory do?
Haskell and Agda are probably the most obvious examples. Ocaml too, but it is much older, so its type system is not as categorical. There is also Idris, which is not as well-known but is very cool.
- Playing Atari Games in OCaml
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Bloat
That does sound problematic, but without the code it is hard to tell what is the issue. Typically, compiling a 6kLoc file like https://github.com/ocaml/ocaml/blob/trunk/typing/typecore.ml takes 0.8 s on my machine.
What are some alternatives?
jevkalk - A Jevko-based interpreter.
Alpaca-API - The Alpaca API is a developer interface for trading operations and market data reception through the Alpaca platform.
motorway-lang - An esoteric programming language based on the British motorway network
VisualFSharp - The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio
parsejevko.js - [DEPRECATED] Deprecated in favor of https://github.com/jevko/jevko.js
dune - A composable build system for OCaml.
Cwerg - The best C-like language that can be implemented in 10kLOC.
TradeAlgo - Stock trading algorithm written in Python for TD Ameritrade.
utena
melange - A mixture of tooling combined to produce JavaScript from OCaml & Reason
Cliver - a new language definition
rust - Rust for the xtensa architecture. Built in targets for the ESP32 and ESP8266