Golang dynamic binding of interface types

This is a creation in Article, where the information may have evolved or changed.

Golang its interface type, it implements dynamic binding.

 
 
 1 import "fmt"
 2 
 3 type ITest interface {
 4     Test()
 5 }
 6 
 7 type A int
 8 
 9 func (a *A) Test() {
10     fmt.Println(a)
11 }
12 
13 func print(t ITest) {
14     fmt.Printf("%T", t)
15 }
16 
17 func main() {
18     a := A(1)
19     print(&a)
20 }

The output is:

*main. A

In particular, note that in the main function, print (&A), if passed in A, returns an error: "method has pointer receiver"

The difference in this, can refer to http://blog.csdn.net/timemachine119/article/details/54927121