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-rw-r--r--lib/ur/basis.urs2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/ur/basis.urs b/lib/ur/basis.urs
index 71320a28..59715a7e 100644
--- a/lib/ur/basis.urs
+++ b/lib/ur/basis.urs
@@ -206,6 +206,8 @@ val spawn : transaction unit -> transaction unit
val sleep : int -> transaction unit
val rpc : t ::: Type -> transaction t -> transaction t
+val tryRpc : t ::: Type -> transaction t -> transaction (option t)
+(* Returns [None] on error condition. *)
(** Channels *)