lkejfl

Lec19/go.mod

@@ -0,0 +1,3 @@
+module main.go
+
+go 1.24.4

Lec19/main.go

@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+type Student struct {
+	name string
+	age int
+}
+
+type Desriber interface {
+	Describe()
+}
+
+
+func (std Student) Describe(){
+	fmt.Printf("%s and %d y.o",std.name,std.age)
+}
+
+func TypeDescriber(i interface{}){
+	switch v := i.(type){
+		case string:
+			fmt.Println("I am string")
+		case int:
+			fmt.Println("I am int")
+		case Desriber:
+			fmt.Println("I am describer!")
+			v.Describe()
+		default:
+			fmt.Println("Unknown type but I still work!")
+	}
+}
+
+func main() {
+	TypeDescriber(9)
+	std := Student{"Alex", 19}
+	TypeDescriber(std)
+}