b2ea6b6a02
This PR adds an initial set of `@[grind]` annotations for `List`/`Array`/`Vector`, enough to set up some regression tests using `grind` in proofs about `List`. More annotations to follow.
14 lines
519 B
Text
14 lines
519 B
Text
open List
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-- Failing with:
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-- [issue] unexpected metavariable during internalization
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-- ?α
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-- `grind` is not supposed to be used in goals containing metavariables.
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-- [issue] type error constructing proof for Array.eq_empty_of_append_eq_empty
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-- when assigning metavariable ?xs with
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-- l₁
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-- has type
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-- List α : Type u_1
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-- but is expected to have type
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-- Array ?α : Type ?u.430
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theorem dropLast_concat : dropLast (l₁ ++ [b]) = l₁ := by grind (gen := 6)
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