How would you build a tool to automatically convert Swift code to Javascript? This is a hard problem that becomes even harder/impossible if you use the wrong tools. To do it correctly, we will need to steal some ideas from how compilers work. (more…)

Protocols bring a lot of power and flexibility to our code. Some might say that this is the most important feature of Swift, especially since Apple described it as “Protocol oriented programming language”. But every once in a while, things don’t work as e... (more…)

While working on InterposeKit, I had a rather specific need: Create an implementation that simply calls super, but at runtime instead of at compile time. Doesn’t sound so hard, does it? Well, here we go again. (more…)

A collection of the papers, conference talks, articles, blog posts, interesting Twitter threads, HN/reddit comments on systems engineering - copyconstruct/library... (more…)

Swift has built-in support for writing asynchronous and parallel code in a structured way. Asynchronous code can be suspended and resumed later, although only one piece of the program executes at a time. Suspending and resuming code in your program lets i... (more…)