miniblog.

nREPL is a really interesting protocol for developer tools. It's extensible, but one of the basic operations is eval(). If your nREPL server doesn't support a given operation, you can just send an eval request to achieve the same result!

Playing with VS Code also reminds me how overloaded the tab key can be. It might do indentation, or LSP completion, or snippet completion, or Copilot completion. In Emacs I've configured these operations on separate keys (e.g. yasnippet on SPC) which is less surprising.

If you have a value that can be any type (the 'top type'), what operations should your language support on that value? Equality is very common, but it's debatable. I increasingly feel that every value in a language should have some sort of debug print available.