32 lines
834 B
Go
32 lines
834 B
Go
package selectdefault
|
|
|
|
import "fmt"
|
|
|
|
func SelectDefault() {
|
|
msgs := make(chan string)
|
|
signals := make(chan string)
|
|
|
|
select {
|
|
case val := <-msgs:
|
|
fmt.Println("Received", val)
|
|
default:
|
|
fmt.Println("`default` can be used to prevent blocking when there's nothing to receive from a channel")
|
|
}
|
|
|
|
select {
|
|
case msgs <- "hello":
|
|
fmt.Println("Sent hello")
|
|
default:
|
|
fmt.Println("`default` can be used to prevent blocking when we send something to an unbuffered channel but there's nobody to receive")
|
|
}
|
|
|
|
select {
|
|
case val := <-msgs:
|
|
fmt.Println("Received something from msgs", val)
|
|
case val := <-signals:
|
|
fmt.Println("Received something from signals", val)
|
|
default:
|
|
fmt.Println("`default` can be used to prevent blocking when there's nothing to receive or if its not possible to send across multiple channels")
|
|
}
|
|
}
|