Hot-reloading OCaml on Web, Desktop, and Android3 minute read
Reason mobile cross-compilation deep dive
Making a cross-platform mobile game in Reason/OCaml
I launched the first cross-platform mobile native game written in Reason a few weeks ago 🎉, to the Android and iOS app stores, with a free web version and a macos desktop bundle (source code all on github).
Getting there required lots of fiddling with cross-compilers and build systems, and so I made a tool that will take away much of the pain involved, so you can get started immediately and get your game into the world. NB: This is still super experimental but I'm really excited about it and want to get y'all in on the fun.
Building async/await in Reason
Lots of people have come into the discord channel asking about how to elegantly deal with async things. We've got
Promise.then_ and good old callbacks, but having a syntax like
async/await can really make things nicer when you have a lot of async going on. So far in the web clients I've made, there hasn't been enough asynchrony to really feel that pain, but I thought it would be an interesting challenge to tackle anyway.
Advanced ReasonReact: Higher Order Components
After jumping into ReasonReact, I soon came to the question "How do I do higher-order components?" I had some duplicated logic in several components regarding data fetching, and I wanted to use this familiar React tool to refactor.
To illustrate, we'll be making a "fetches something from the network" wrapper component. We'll start with a "mixed component" that we'll then try to refactor.
A ReasonReact Tutorial
Are you a big fan of React, and want to know more about Reason/OCaml? I made this for you!
This tutorial was updated on Nov 8, 2017 for the new "v3" syntax of Reason.
This tutorial aims to give you a nice introduction to the syntax and type system of Reason, through the ReasonReact library. We'll be building a simple Todo list application.
When will ReasonML be ready?
What's the current status? At the moment, we're mostly in the realm of "enthusiasts who are OK with being on the bleeding edge, and want to help build out the foundation in their spare time."
Template-based macros in Reason/OCaml
A couple of people have shown up in the discord channel asking whether Reason has macros, and the answer is "sort of." I think we can do better.
Your first native Reason/OCaml project
I just wrote my first Reason project that compiled to native, and you can too! Luckily for you, my first native project was a cli tool to help people get started with native Reason development 🙌.
Getting Started with Reason and BuckleScript
A couple of people have asked me how to get up and running recently, so I thought I'd put something together. If you're looking for a "just clone this repo & go", here's a very simple boilerplate I put together for this post, or you can check out the reason-react-example repository.
If asked 2 years ago, I probably would have gone with a regex and a string-munging python script, but I'd just spent the past few nights messing with babel plugins, and figured I could probably get pretty far with relatively little work. As it happened, I was impressed by how easy it was using the tools that babel provides.
As a bonus, it also works with React Native because they have the same API, and it could probably be extended to other libraries without too much work.
What Holds Me Back From Clojurescript
By the end of this post, I hope I will have convinced myself to face my fears and dive into clojurescript anyway :D
Visualizing Reactive Streams: Hot and Cold Observables
Reactive Programming is getting a lot of attention these days, and it promises to reduce frustration, bugs, and greenhouse gas emissions. Unfortunately, there's a sizeable learning curve involved while you try and get your head to think in streams instead of imperative sequential processes.
Rust compiling rust: adventures with librustc
For the web-based everything notebook that I'm working on, I've been writing backend hookups to various programming REPLs, including IPython and Gorilla. I wanted to be able to evaluate rust code as well in this notebook environment, and so I set about writing a simple server that would compile up a string in rust when asked. This proved do have a couple of gotchas, so I thought I'd air my thoughts here.
Switching from Ghost to Hexo
My blog used to use Hyde, a python clone of the popular jekyll platform. When Ghost came out, I quickly switched over, due in main part to the great editor and beautiful themes. I used buster to serialize the blog so that I could still serve it as a static site. I had two main regrets, though. 1) using buster to scrape ghost was a hack. 2) My posts were locked in an sqlite db, where git could only do a binary diff.
The Hexo static blogging engine gets an admin UI
I recently switched from ghost to hexo, and the biggest thing missing for me was the editor interface. So I made one. Currently, it's mostly a clone of the Ghost interface, but I have some ideas for making it even more awesome.
Rust vs Go
Go and Rust seem like natural competitors. They are both trying the role of a C-like low-level language with modern affordances, safety, and nice, clean concurrency. And they're each backed by a major player in the browser race - go by Google, rust by Mozilla.
First Impressions of Rust
A while ago, I made a cellular automata simulator in Go, inspired by this video about a "rock, paper, scissors" simulation, where there are three "species" of cells which consume each other.
Last week I rewrote this in Rust
The Noble Perceptron
Photon Ray Tracing
A few months ago I saw @scanlime's "Zen Photon Garden" on hacker news, and was really impressed. In short, you draw walls/mirrors with your mouse, and it ray-traces light from a central source. Very beautiful and "zen". However, as a programmer, drawing lines by hand was far too inaccurate. So I forked it and added a scriptable interface for adding walls.