Comments (2)
jonsterling
commented on June 2, 2024
@wilcoxjay Good question; in my previous implementations of LCF, I think that I went with the traditional choice of raising an error in these cases. I think that is more "technically correct" in some sense...
However, I have found that in practice, it is much nicer to be able to write scripts that are a bit less sensitive than this; for instance, it is nice to say t; [t1, t2] rather than t; [t1, t2, id, id , id, id, id]. In a refiner, usually rules are arranged such that the "most important" goals appear first, and all the silly wellformedness subgoals that you hope can be discharged automatically eventually get put at the end, so this works nicely in practice.
It could be reasonable to have both the versions that require the correct length and those which do not, if there is demand for it...
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wilcoxjay
commented on June 2, 2024
Sounds good, thanks!
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Related Issues (18)
- switch to HOAS? HOT 3
- consider dealing with generic judgment primitively HOT 1
- allow environments to use a different structure from telescopes? HOT 1
- Try making validations just open terms
- correct the monad
- Nominal LCF should be primarily based on "multitactics"
- Integrate Dependent LCF HOT 1
- Replace example with something non-silly
- implement 'sequential' sequencing
- [agda] define model HOT 5
- Add a function to apply a tactic to subgoals within a certain range HOT 3
- Add a tactic that would always fail. HOT 1
- PROGRESS tactical
- Meta information attached to subgoals? HOT 8
- Warning for too many tactics in `[_, _, ..., _]` HOT 1
- Make proof state abstract somehow
- Consider getting rid of backtracking
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