package bidder import ( "log" "os" ) type Option func(auction *auction) func OptVerbose(a *auction) { logger := log.New(os.Stdout, "[seal::client][verbose] ", log.LstdFlags) a.verbose = logger.Printf } func OptDebug(a *auction) { logger := log.New(os.Stdout, "[seal::client][debug] ", log.LstdFlags) a.debug = logger.Printf }