simplify

examples/select/select.go

@@ -13,13 +13,9 @@ func main() {
     c1 := make(chan string)
     c2 := make(chan string)
 
-    // This third channel will indicate when we're done
+    // Each channel will receive a value after some amount
-    // and can exit the program.
+	// of time, to simulate e.g. blocking RPC operations
-    d := make(chan bool, 1)
+	// executing in concurrent goroutines.
-
-    // The first two channels will receive a value after
-    // some amount of time, to simulate e.g. blocking RPC
-    // operations executing in concurrent goroutines.
     go func() {
         time.Sleep(time.Second * 1)
         c1 <- "one"
@@ -31,22 +27,12 @@ func main() {
 
     // We'll use `select` to await both of these values
     // simultaneously, printing each one as it arrives.
-    // Once we've received both, we'll send a value to the
+    for i := 0; i < 2; i++ {
-    // `d` channel indicating that we're ready to proceed.
+        select {
-    go func() {
+        case msg1 := <-c1:
-        for i := 0; i < 2; i++ {
+            fmt.Println("received", msg1)
-            select {
+        case msg2 := <-c2:
-            case msg1 := <-c1:
+            fmt.Println("received", msg2)
-                fmt.Println("received", msg1)
-            case msg2 := <-c2:
-                fmt.Println("received", msg2)
-            }
         }
-        d <- true
+    }
-    }()
-
-    // Since all other code is running in concurrent
-    // goroutines, we'll executing a blocking receive
-    // here to await completion of our example.
-    <-d
 }