Here's the exercise (in class I added more comments about filling holes and implicit arguments and so on): dependenttyp.es/classes/fa2022
Goal is to get folks familiar with proof objects / proof terms, and with the equality type
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But have the class gets stuck figuring out the interface and doesn't have enough time to work on that. So when I ask about their experiences and how they could make it easier (it's a proof automation class), many of the answers are complaining about holes and the interface
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Plus a bunch about how on a Mac, half of the keybindings don't work
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VSCode doesn't seem much better than emacs for Agda honestly. Students still found it confusing and had to learn weird emacs bindings
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Good support for continuous editing should not require any explicit action from the user at all
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Yeah the continuous editing in Lean is something I love so much! I love it how things live update as I do stuff, but maybe I’m just used to that from other languages… I generally use source control if I want to remember a past state.
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I also love how you can just click on tactics and see the implementation - really helps to demystify some of the magic, beyond them just being some black box. The structured tactics that Lean 4 was also exploring last time I looked seemed like a nice improvement too.
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Yeah, having tactics be in the same language as the proof assistant *and* being a jump-to-defintion click away in an IDE is a massive win for learning and accessibility, at least for people like me. Can't remember if Isabelle had something similar as well.
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