open! Base open! Import let errors = [ Error.of_string "ABC" ; Error.tag ~tag:"DEF" (Error.of_thunk (fun () -> "GHI")) ; Error.create_s [%message "foo" ~bar:(31 : int)] ] ;; let%expect_test _ = List.iter errors ~f:(fun error -> show_raise (fun () -> Error.raise error)); [%expect {| (raised ABC) (raised (DEF GHI)) (raised (foo (bar 31))) |}] ;; let%expect_test _ = List.iter errors ~f:(fun error -> show_raise (fun () -> Error.raise_s [%sexp (error : Error.t)])); [%expect {| (raised ABC) (raised (DEF GHI)) (raised (foo (bar 31))) |}] ;;