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fix:
dsimp
should reduce kernel projections (#3607)
closes #3395
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,8 @@ | ||
structure S where | ||
f : Nat → Nat | ||
|
||
example (h : g 1 = x) : { f := g : S }.f 1 = x := by | ||
unfold S.f | ||
dsimp | ||
guard_target =ₛ g 1 = x | ||
assumption |