edits

[lambda.git] / code / untyped_evaluator.ml

diff --git a/code/untyped_evaluator.ml b/code/untyped_evaluator.ml
index 9ca2a74..5ccecb5 100644 (file)
--- a/code/untyped_evaluator.ml
+++ b/code/untyped_evaluator.ml
@@ -61,7 +61,7 @@ and env = (identifier * term) list
 (* Operations for environments *)
 let empty = []
 let shift (ident : identifier) binding env = (ident,binding) :: env
-let rec lookup (sought_ident : ident) (env : env) : term option =
+let rec lookup (sought_ident : identifier) (env : env) : term option =
   match env with
   | [] -> None
   | (ident, binding) :: _ when ident = sought_ident -> Some binding