Notes on Postmodern Programming is a fun, quirky paper. The comments on where metaphors come from is interesting.
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ASTs typically discard comments, and that's usually what you want.
The only time (AFAICS) that preserving comments is useful is for writing a code formatter.
Could you write a formatter in terms of a list of lexemes? A CST is a non-trivial bit of code for one use case.
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.
Do any tech streamers try new software live? It'd be a really fun way of doing UX testing.
