Исходники и презентации

lessons/channels/is_closed_1/main.go

@@ -0,0 +1,19 @@
+package main
+
+import "fmt"
+
+func IsClosed(ch chan int) bool {
+	select {
+	case <-ch:
+		return true
+	default:
+		return false
+	}
+}
+
+func main() {
+	ch := make(chan int)
+	fmt.Println(IsClosed(ch))
+	close(ch)
+	fmt.Println(IsClosed(ch))
+}