直接上代码：
首先，我定了三个接口、一个结构和三个方法：
type DeptModeFull interface { Name() string
SetName(name string)
Relocate(building string, floor uint8)}type DeptModeA interface { Name() string
SetName(name string)}type DeptModeB interface { Relocate(building string, floor uint8)}type Dept struct {
name string
building string
floor uint8
Key string}
func (self Dept) Name() string {
return self.name
}
func (self Dept) SetName(name string) {
self.name = name
}
func (self *Dept) Relocate(building string, floor uint8) {
self.building = building
self.floor = floor
}而后我写了一些测试代码：
dept1 :=
Dept{
name: "MySohu",
building: "Internet",
floor: 7}switch v := interface{}(dept1).(type) {case DeptModeFull:
fmt.Printf("The dept1 is a DeptModeFull.\n")case DeptModeB:
fmt.Printf("The dept1 is a DeptModeB.\n")case DeptModeA:
fmt.Printf("The dept1 is a DeptModeA.\n")default:
fmt.Printf("The type of dept1 is %v\n", v)
}
deptPtr1 := &dept1if _, ok := interface{}(deptPtr1).(DeptModeFull); ok {
fmt.Printf("The deptPtr1 is a DeptModeFull.\n")
}if _, ok := interface{}(deptPtr1).(DeptModeA); ok {
fmt.Printf("The deptPtr1 is a DeptModeA.\n")
}if _, ok := interface{}(deptPtr1).(DeptModeB); ok {
fmt.Printf("The deptPtr1 is a DeptModeB.\n")
}打印出的内容：
The dept1 is a DeptModeA. The deptPtr1 is a DeptModeFull. The deptPtr1 is a DeptModeA. The deptPtr1 is a DeptModeB.