.

reuse/golang/src/package/context/Makefile

@@ -0,0 +1,4 @@
+
+
+run_deadline_example:
+	go run deadline_example.go

reuse/golang/src/package/context/deadline_example.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+const shortDuration = 1 * time.Millisecond
+
+func main() {
+	d := time.Now().Add(shortDuration)
+	ctx, cancel := context.WithDeadline(context.Background(), d)
+	fmt.Println(ctx.Deadline())
+
+	defer cancel()
+	select {
+	case <-time.After(1 * time.Second):
+		fmt.Println("overslept")
+	case <-ctx.Done():
+		fmt.Println(ctx.Err())
+	}
+}
+
+//go run deadline_example.go
+//2023-01-09 20:06:23.233551 +0800 CST m=+0.001400468 true
+//context deadline exceeded