If GenericMethod is truly the same, as in not even using the struct fields
from P1data/P2data then there is a way. You just need to create a new
struct type in package main that implements GenericMethod and then in
packages p1 and p2 you embed the struct and thus expose the method.
package main
import (
"fmt"
)
type I interface {
F1()
GenericMethod()
}
type Generic struct{}
func (*Generic) GenericMethod() {
fmt.Printf("Hello World")
}
//package p1
type P1data struct {
Generic
}
func (x *P1data) F1() {}
func main() {
i := I(&P1data{})
i.GenericMethod()
}
On Wednesday, 25 April 2018 12:01:36 UTC+8, rickyu...@gmail.com wrote:
>
> Hello all,
>
> I am golang beginner. And I have a problem with interfaces.
> Here is the problem where I have one main package with has an Interface I.
> and multiple sub packages each implementing interface I. So I have a method
> which is exactly the same for all sub packages. Is there a way I can
> implement this method for I.
>
> package main
>
> type I interface {
> F1()
> GenericMethod() // Is there a way I can implement it on I since
> its the same in all packages?
> }
>
> package p1
>
> type P1data struct {}
>
> (x *P1data) F1()
> (x *P1data) GenericMethod()
>
>
> package p2
>
> type P2data struct {}
>
> (x *P2data) F1()
> (x *P2data) GenericMethod()
>
>
> under the main package.
> for each data in sub packages do data.F1 and data.GenericMethod().
>
>
> Now I don't want to implement GenericMethod for all packages. Since its
> the same.So can I implement GenericMethod on I (I know this is not
> possible). But how can do something like this?
>
> -Thanks
>
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