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-- THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS
-- [polonius_list]
import Base
open Primitives
namespace polonius_list
/- [polonius_list::List] -/
inductive List (T : Type) :=
| Cons : T → List T → List T
| Nil : List T
/- [polonius_list::get_list_at_x]: forward function -/
divergent def get_list_at_x (ls : List U32) (x : U32) : Result (List U32) :=
match ls with
| List.Cons hd tl =>
if hd = x
then Result.ret (List.Cons hd tl)
else get_list_at_x tl x
| List.Nil => Result.ret List.Nil
/- [polonius_list::get_list_at_x]: backward function 0 -/
divergent def get_list_at_x_back
(ls : List U32) (x : U32) (ret0 : List U32) : Result (List U32) :=
match ls with
| List.Cons hd tl =>
if hd = x
then Result.ret ret0
else
do
let tl0 ← get_list_at_x_back tl x ret0
Result.ret (List.Cons hd tl0)
| List.Nil => Result.ret ret0
end polonius_list
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