8 lines
321 B
Text
8 lines
321 B
Text
1258.lean:4:19: error: failed to revert 'xs', 'foo' depends on it, and 'foo' is an auxiliary declaration introduced by the equation compiler (possible solution: use tactic 'clear' to remove 'foo' from the local context)
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state:
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xs : list ℕ,
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foo : ∀ (ns : list ℕ), P xs ns,
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n : ℕ,
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ns : list ℕ
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⊢ P xs (n :: ns)
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