Let us have some concrete code snippet for discussion:
https://play.golang.org/p/fdcEs3k9U8I
Is this what you would like to have?
On Mon, Jun 3, 2019 at 11:54 AM 杜沁园 <sa517...@mail.ustc.edu.cn> wrote:
> I recently write a program to recursively print all fields and value in a
> struct. Interface() is the most convinence way to get underlying value in
> go.
> But it will panic when field is private.How can I access private field?
>
> For simple type, I can stil use Int(),Bool(),etc to read private field.
> But if the field is a interface, I do not know how to access is concrete
> value without use Interface() method.
>
>
> For example:
>
> type Expr interface {
> eval(v string) bool
> }
>
> type MyExpr struct {
> Haha string
> }
>
>
> type Web struct {
> Host string
> epr Expr
> }
>
>
>
>
> How can I get Web.Epr Value by reflection without use Interface() method
>
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