miniblog.

I'm pretty impressed with Cursor: I've successfully asked it to perform codebase transforms in English, and it's worked! E.g. "Replace all calls foo(..., true) with foo_immediate(...) define a foo_immediate function". I'm still reading the diff and checking tests -- it's still AI after all.

I'm having fun writing a simple type checker, but I'm learning firsthand why syntax-directed checking doesn't work. It prevents inference. My checker catches real bugs, but it can't handle cases like this: [1, 2].map(fun(x) { x + 1; }) I think I need bidirectional checking.

@tristanC That's an option! There's often cases where you know what the user wanted though, so you can provide a sensible AST that the toolchain can handle. For example, a malformed string literal can still be parsed a string so type checking etc can be helpful.