ppx_deriving
rescript-compiler
ppx_deriving | rescript-compiler | |
---|---|---|
7 | 95 | |
442 | 6,472 | |
0.5% | 0.9% | |
7.7 | 9.5 | |
5 days ago | 2 days ago | |
OCaml | OCaml | |
MIT License | GNU General Public License v3.0 or later |
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ppx_deriving
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My Thoughts on OCaml
> You gave a beautiful answer about programming language
You do the same thing as in Rust, Scala or Haskell and derive the printer [1]. Then at the callsite, if you know the type then you do `T.show` to print it or `T.eq`. If you don't know the type, then you pass it in at the top level as a module and then do `T.show` or `T.eq`.
> Or to convert one type into another type?
If you want to convert a type, then you have a type that you want to convert from such as foo and bar, then you do `Foo.to_bar value`.
We can keep going, but you can get the point.
You _can't_ judge a language by doing what you want to do with one language in another. If I judge Rust by writing recursive data structures and complaining about performance and verbosity that's not particularly fair correct? I can't say that Dart is terrible for desktop because I can't use chrome developer tools on its canvas output and ignore it's hot-reloading server. I can't say Common Lisp code is unreadable because I don't have type annotations and ignore the REPL for introspection.
[1] https://github.com/ocaml-ppx/ppx_deriving
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Is rust serde unique?
Ocaml has the amazing ppx_deriving which can be used for serialization / deserialization in various formats.
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Question on type declaration syntax
I wrote a CLI tool and I'd like to produce statically linked binaries of my tool. However, I cannot do this because I'm using the ppx_deriving deriving preprocessor, and I cannot produce a statically linked executable while using this package.
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OCaml at First Glance
Not great, not terrible; the language supports annotations which mean nothing to the compiler but which pre-processors can take advantage of, and there is a framework called ppx which you can use to write your own preprocessor. There exist many pre-processors to do things like add inline tests, generate getter/setter/pretty-printing functions, and so on. Here is an example:
https://github.com/ocaml-ppx/ppx_deriving
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Bad documentation of Jane Street libraries
is from https://github.com/ocaml-ppx/ppx_deriving
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Recommended method for pretty-printing collections in Core?
Have you tried to derive a print function using https://github.com/ocaml-ppx/ppx_deriving
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How do I define ordering for my sum types?
However, there is a ppx (a pre-processor) which can do the job : ppx_deriving. You just have to anotate your type in oder to get the compare function automatically generated :
rescript-compiler
- Borgo is a statically typed language that compiles to Go
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Tired of Typescript? Check out ReScript!
ReScript is a fully typed language with an easy to understand JS like syntax, blazing fast compiler, that compiles to JavaScript. You can easily drop it into an existing project, and there is even a way to generate TypeScript types if you want to add it to a TypeScript project!
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Learning Elm by porting a medium-sized web front end from React (2019)
If you’re a front-end developer, you should checkout ReScript[1], supposedly a JS-oriented successor of ReasonML and developed by the ReasonML team.
[1] https://rescript-lang.org/
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ReScript: Rust like features for JavaScript
ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". What that means is that ReScript has a lightning fast compiler, an easy to learn JS like syntax, strong static types, with amazing features like pattern matching and variant types. Until 2020 it was called "BuckleScript" and is closely related to ReasonML.
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Ask HN: Interest in a Rust-Inspired Language Compiling to JavaScript?
As another commenter has already suggested, ReasonML has a lot of what you described here.
However, modern JS-oriented toolchain for ReasonML is called ReScript and you can learn more here: https://rescript-lang.org/
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How does one write React apps in a purely functional style without making the entire codebase a mess?
ReScript (before BuckleScript) https://rescript-lang.org/ is a functional language that can also use OOP. Ideal for Javascript and Typescript projects, React and servers. It integrates perfectly with Javascript and Typescript code https://rescript-lang.org/docs/react/latest/introduction
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Show HN: EdgeDB Cloud and 4.0 with FTS and Auth
Thank you!
We invited Gabriel because we think what he's building is pretty cool. It showcases so much about EdgeDB: its type system, data model, query language, composability, introspection, etc.
I'm not a ReScript user myself. What I know is that it's a functional programming language somewhat heavily inspired by OCaml. Their website goes into details [1]
[1] https://rescript-lang.org/
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Strong typing, a hill I'm willing to die on
You might want to look into ReScript (https://rescript-lang.org/). It has strong static typing with type inference, and it is very fast.
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Building React Components Using Unions in TypeScript
This is because a “Tagged Union”, another word for TypeScript’s Discriminated Union, is a way to “tag which one is in use right now… we check the tag to see”. Just like when you’re shopping and check the tag of a piece of clothing to see what the price is, what size it is, or what material it’s made out of. Languages like ReScript compile many of their Unions (called Variants) to JavaScript Objects that have a tag property.
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Converting a JavaScript React app to a ReScript React app.
ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". Let's take a look at how we can add it to an existing React project.
What are some alternatives?
deriving-show-simple
svelte-wasm
ppx_jane - Standard Jane Street ppx rewriters
Elm - Compiler for Elm, a functional language for reliable webapps.
ppx_sexp_conv - Generation of S-expression conversion functions from type definitions
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
json-serde - Example of usage antlr4 and shapeless
Fable: F# |> BABEL - F# to JavaScript, TypeScript, Python, Rust and Dart Compiler
generic-data - Generic data types in Haskell, utilities for GHC.Generics
purescript - A strongly-typed language that compiles to JavaScript
goderive - Derives and generates mundane golang functions that you do not want to maintain yourself
reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems