Romain Pouclet

I recently started a tiny side project that implements the Beanstalk protocol. If you’ve never heard of beanstalkd, it’s a work queue that’s really convenient for simple projects: you post jobs to queues and those jobs are picked up and handled by workers. Each job that you post to a queue has a priority that goes from 0 (urgent) to 4,294,967,295 (not so much). In Swift, this can be represented with a UInt32, but let’s see how we can use Tagged to make it safer and more expressive, starting with an example from a real-world codebase.

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It has been three and a half year that I get the occasional notification from GitHub, about someone asking Facebook to add Swift Support to Infer. They grow up so fast!

In a previous blog post, we covered how to define a custom editor to write your commit messages in. The example was deliberately simple and static, but we covered that an editor could be practically anything. Why not create our own editor in Swift then?

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I already mentioned this tiny side project that I’ve been playing with a couple of time before. I learned a lot while working on it, so I realized I could share some of this knowledge around here. Let’s start with customizing the editor to use to write a commit message. This is probably obvious, but most of this blog post will talk about running git commands from your shell. If you’re not a command line user and prefer using some tool like Fork or Tower don’t be scared, it should be quite easy to follow.

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There is a tiny command line tool as part of the Swift toolchains called swift-format. It’s still a work in progress, but a few days ago I wanted to try it on an existing project, for fun. It’s very simple to use, as the documentation suggests:

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