go 模仿JAVA，面向接口/链式编程

Test.go

package test  func NewTest() ITestIntf {     return &test{""} }  type ITestIntf interface {     GetName() string     SetName(string) ITestIntf }  type test struct {     name string }  func (t *test) GetName() string {     return (*t).name }  func (t *test) SetName(n string) ITestIntf {     (*t).name =n     return t } 

SubTest.go

package test  func NewSubTest() ISubTestIntf {     return &subTest{NewTest(), "", 0} }  type ISubTestIntf interface {     ITestIntf     GetSex() string     SetSex(string) ISubTestIntf     GetAge() int     SetAge(int) ISubTestIntf }  func (t *subTest) GetSex() string {     return (*t).sex }  func (t *subTest) SetSex(s string) ISubTestIntf {     (*t).sex =s     return t }  func (t *subTest) GetAge() int {     return (*t).age }  func (t *subTest) SetAge(a int) ISubTestIntf {     (*t).age =a     return t }  

chan.go

import (     "fmt"     "test" )  func main() {     var t ITestIntf     t = NewTest().SetName("张三")     var s ISubTestIntf     s = NewSubTest()     fmt.Println(t.GetName())     s.SetAge(12).SetSex("女").SetName("李四")//这里不是很完美，父接口的方法必须放到后面。     fmt.Println("name:",s.GetName(),"sex:", s.GetSex(), "age:", s.GetAge()) }