def exchange
import bend-kit-postgres@0.3.0.0/postgres.bend as Postgresimport Base
import bend-kit-postgres@0.3.0.0/codec.bend as Codec
199def exchange(c: Conn, m: Codec.Front) -> IO(Result<&1, &1, Failure, Conn & Codec.Back>):
200 do IO<Result<&1, &1, Failure, Conn & Codec.Back>>:
201 s : Result<&1, &1, Failure, Conn> <- send(c, Codec.encode(m))
202 reply(s)