No, it is possible, but you need to pass the pointer to the interface.
You can then use reflect to interrogate the interface value.
The bigger question, and one that would help here would be what is it
that you are actually trying to achieve.
On Mon, 2018-12-10 at 08:53 -0600, Mark Volkmann wrote:
> Yes, this is what I'm trying to do!
> Perhaps this is not possible.
>
> On Sun, Dec 9, 2018 at 10:34 PM Robert Engels <reng...@ix.netcom.com>
> wrote:
>
> >
> > I think what the OP wants is:
> >
> > type A interface{}
> > type B interface{}
> >
> > ...
> > PrintInterface(A)
> >
> > Meaning they want to pass the interface definition to some method.
> >
> > At least that’s what I am guessing.
> >
> > On Dec 9, 2018, at 9:22 PM, Space A. <reexist...@gmail.com> wrote:
> >
> > reflect/* is a bit tricky. Use pointer to get interface itself.
> >
> > package main
> >
> > import (
> > "fmt"
> > "reflect"
> > )
> >
> > func main() {
> > test := interface{}("test")
> > printInterfaceValue(test)
> > }
> >
> > func printInterfaceValue(i interface{}) {
> > switch testing := i.(type) {
> > case interface{}:
> > fmt.Println("is interface, with value:", testing)
> > case string:
> > fmt.Println("is not interface")
> > }
> >
> > fmt.Println("reflect.Type is", reflect.TypeOf(&i).Elem())
> > }
> >
> > Output:
> >
> > is interface, with value: test
> > reflect.Type is interface {}
> >
> >
> >
> >
> >
> >
> > понедельник, 10 декабря 2018 г., 5:05:12 UTC+3 пользователь Robert
> > Engels
> > написал:
> > >
> > >
> > > I mean reflect.Type not a type that is an interface.
> > >
> > > On Dec 9, 2018, at 6:53 PM, Space A. <reexi...@gmail.com> wrote:
> > >
> > > Of course. When you "pass a value whose type implements the
> > > interface" as
> > > an interface argument to a function, you in fact pass an
> > > *interface*.
> > >
> > >
> > > воскресенье, 9 декабря 2018 г., 23:23:41 UTC+3 пользователь Mark
> > > Volkmann
> > > написал:
> > > >
> > > >
> > > > Is it possible to pass an interface to a function in Go? I
> > > > don’t want to
> > > > pass a value whose type implements the interface, I want to
> > > > pass the
> > > > interface.
> > > >
> > > > --
> > > > R. Mark Volkmann
> > > > Object Computing, Inc.
> > > >
> > > --
> > > You received this message because you are subscribed to the
> > > Google Groups
> > > "golang-nuts" group.
> > > To unsubscribe from this group and stop receiving emails from it,
> > > send an
> > > email to golang-nuts...@googlegroups.com.
> > > For more options, visit https://groups.google.com/d/optout.
> > >
> > > --
> > You received this message because you are subscribed to the Google
> > Groups
> > "golang-nuts" group.
> > To unsubscribe from this group and stop receiving emails from it,
> > send an
> > email to golang-nuts+unsubscr...@googlegroups.com.
> > For more options, visit https://groups.google.com/d/optout.
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups
> > "golang-nuts" group.
> > To unsubscribe from this group and stop receiving emails from it,
> > send an
> > email to golang-nuts+unsubscr...@googlegroups.com.
> > For more options, visit https://groups.google.com/d/optout.
> >
>
> --
> R. Mark Volkmann
> Object Computing, Inc.
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
