Official Go implementation of the Ethereum protocol
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go-ethereum/event/example_test.go

42 lines
851 B

package event
import "fmt"
func ExampleTypeMux() {
type someEvent struct{ I int }
type otherEvent struct{ S string }
type yetAnotherEvent struct{ X, Y int }
var mux TypeMux
// Start a subscriber.
done := make(chan struct{})
sub := mux.Subscribe(someEvent{}, otherEvent{})
go func() {
for event := range sub.Chan() {
fmt.Printf("Received: %#v\n", event)
}
fmt.Println("done")
close(done)
}()
// Post some events.
mux.Post(someEvent{5})
mux.Post(yetAnotherEvent{X: 3, Y: 4})
mux.Post(someEvent{6})
mux.Post(otherEvent{"whoa"})
// Stop closes all subscription channels.
// The subscriber goroutine will print "done"
// and exit.
mux.Stop()
// Wait for subscriber to return.
<-done
// Output:
// Received: event.someEvent{I:5}
// Received: event.someEvent{I:6}
// Received: event.otherEvent{S:"whoa"}
// done
}