def internal_contains_cons_or
bend-mathlib@0.8.1.0 · list.bend:605
import bend-mathlib@0.8.1.0/list.bend as List
import Base
605def internal_contains_cons_or(~A: Data, ~eq: A -> A -> Bool, h: A, -t: List<&2, A>, -l: List<&2, A>, +x: A, -s: Bool, ih: {List.contains(~A, ~eq, l, x) == Bool.or(List.contains(~A, ~eq, t, x), s) : Bool}) -> {List.contains(~A, ~eq, h <> l, x) == Bool.or(List.contains(~A, ~eq, h <> t, x), s) : Bool}:
606 internal_any_if_or(eq(h, x), List.contains(~A, ~eq, t, x), s, List.contains(~A, ~eq, l, x), ih)