initial import

best-practices/context/main.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+func main() {
+
+	bg := context.Background()
+	fmt.Println(bg.Deadline()) //0001-01-01 00:00:00 +0000 UTC false
+	fmt.Println(bg.Err())      //<nil>
+	//fmt.Println(<-td.Done())   //blockiert für immer!
+
+	ctx, cancel := context.WithTimeout(bg, 5*time.Second)
+	defer cancel()
+
+	go func() {
+		time.Sleep(500 * time.Millisecond)
+		cancel()
+	}()
+
+	fmt.Println(ctx.Deadline())
+	<-ctx.Done()
+	fmt.Println("Ende")
+
+}