exact toList1_eq_iff_toIndView_eq.mp ht
case mp.refl.e_a
α : Type u_1
β : Type ?u.8604
xs✝ : List1.IndView α
ys : List1 α
x : α
xs : List1.IndView α
head✝ : α
tail✝ : List α
ht✝ : xs.toList1.toList = (List1.cons head✝ tail✝).toList
ht : xs.toList1 = List1.cons head✝ tail✝
⊢ (List1.cons head✝ tail✝).toIndView = xs
no goals