CircleCI is a continuous integration platform similar to Travis CI. You can run your tests on it, save artifacts, deploy software, etc. I’ve found that it offers a number of advantages over Travis: Faster builds Custom Docker image support Local build support Less magic Faster Builds CircleCI builds boot nearly instantly, which I don’t usually get from Travis. The actual speed of the build is roughly the same from what I can tell, but the quick startup is really valuable to me.
I’m kind of obsessed with trying out new programming languages, but it doesn’t feel very productive. Eventually, I’d like to find something that fits just right for the type of programs that I like to write, and get really good at it. That hypothetical perfect language should be/have most of these things, in rough order of priority: Good tooling/development workflow Coherent type system Easy to deploy Simple package management Expressions over statements Multiple dispatch Macro system Tooling/Development Workflow