3a408e0e54
This PR changes the signature of `Array.get` to take a Nat and a proof, rather than a `Fin`, for consistency with the rest of the (planned) Array API. Note that because of bootstrapping issues we can't provide `get_elem_tactic` as an autoparameter for the proof. As users will mostly use the `xs[i]` notation provided by `GetElem`, this hopefully isn't a problem. We may restore `Fin` based versions, either here or downstream, as needed, but they won't be the "main" functions. --------- Co-authored-by: David Thrane Christiansen <david@davidchristiansen.dk>
23 lines
1 KiB
Text
23 lines
1 KiB
Text
funind_errors.lean:4:7-4:26: error: unknown identifier 'doesNotExist.induct'
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funind_errors.lean:22:7-22:23: error: invalid field notation, type is not of the form (C ...) where C is a constant
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takeWhile
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has type
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(?m → Bool) → Array ?m → Array ?m
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takeWhile.foo.induct.{u_1} {α : Type u_1} (p : α → Bool) (as : Array α) (motive : Nat → Array α → Prop)
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(case1 :
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∀ (i : Nat) (r : Array α) (h : i < as.size),
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let a := as.get i h;
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p a = true → motive (i + 1) (r.push a) → motive i r)
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(case2 :
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∀ (i : Nat) (r : Array α) (h : i < as.size),
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let a := as.get i h;
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¬p a = true → motive i r)
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(case3 : ∀ (i : Nat) (r : Array α), ¬i < as.size → motive i r) (i : Nat) (r : Array α) : motive i r
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funind_errors.lean:38:7-38:20: error: invalid field notation, type is not of the form (C ...) where C is a constant
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idEven
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has type
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Even ?m → Even ?m
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funind_errors.lean:45:7-45:19: error: invalid field notation, type is not of the form (C ...) where C is a constant
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idAcc
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has type
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Acc ?m ?m → Acc ?m ?m
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