simp only [hneq, ite_false, map, incrCounts]
α : Type u_1
inst✝ : DecidableEq α
x : α
a : α × Nat
as : List (α × Nat)
h' : Mem x (map Prod.fst as)
ih : map Prod.fst (incrCounts as x) = map Prod.fst as
hneq : ¬a.fst = x
⊢ map Prod.fst (incrCounts (a :: as) x) = map Prod.fst (a :: as)
α : Type u_1
inst✝ : DecidableEq α
x : α
a : α × Nat
as : List (α × Nat)
h' : Mem x (map Prod.fst as)
ih : map Prod.fst (incrCounts as x) = map Prod.fst as
hneq : ¬a.fst = x
⊢ a.fst :: map Prod.fst (incrCounts as x) = a.fst :: map Prod.fst as