go知识重新整理

Go/DesignPattern/observer/observer_test.go

@@ -0,0 +1,23 @@
+/**
+* @Author:zhoutao
+* @Date:2020/12/12 上午10:49
+* @Desc:
+ */
+
+package observer
+
+func ExampleObserver() {
+	Subject := NewSubject()
+
+	reader1 := NewReader("reader1")
+	reader2 := NewReader("reader2")
+	reader3 := NewReader("reader3")
+
+	Subject.Attach(reader1)
+	Subject.Attach(reader2)
+	Subject.Attach(reader3)
+
+	//update and notify all obervers
+	Subject.UpdateContext("observer mode")
+
+}