ssa: select

cl/_testgo/select/in.go

@@ -0,0 +1,45 @@
+package main
+
+func main() {
+	send()
+	recv()
+}
+
+func send() {
+	ch1 := make(chan int)
+	ch2 := make(chan int)
+
+	go func() {
+		println(<-ch1)
+	}()
+	go func() {
+		println(<-ch2)
+	}()
+
+	select {
+	case ch1 <- 100:
+	case ch2 <- 200:
+	}
+}
+
+func recv() {
+	c1 := make(chan string)
+	c2 := make(chan string)
+	go func() {
+		c1 <- "ch1"
+	}()
+	go func() {
+		c2 <- "ch2"
+	}()
+
+	for i := 0; i < 2; i++ {
+		select {
+		case msg1 := <-c1:
+			println(msg1)
+		case msg2 := <-c2:
+			println(msg2)
+		default:
+			println("exit")
+		}
+	}
+}