@@ -82,7 +82,7 @@ getString (MkStrLen str n) = str
83strIndex : StrLen -> Nat -> Maybe Char
83strIndex : StrLen -> Nat -> Maybe Char
84strIndex (MkStrLen str len) i
84strIndex (MkStrLen str len) i
85− = if i >= len then Nothing
85+ = if cast {to = Integer} i >= cast len then Nothing
86 else Just (assert_total (prim__strIndex str (cast i)))
86 else Just (assert_total (prim__strIndex str (cast i)))
88mkStr : String -> StrLen
88mkStr : String -> StrLen