Re: [go-nuts] how to declare type as interface{}

[Harald Weidner]

Hello,

> but this doesn't work:
>
> if err := json.NewDecoder(resp.Body).Decode({}{}); err != nil {
>  t.Fatal(err)
> }

You can use new(interface{}).

See https://play.golang.org/p/s85MwlDygBG

Harald

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Re: [go-nuts] how to declare type as interface{}

[Brian Candler]

You can't take the address of an arbitrary value or expression, although 
you can for composite literals which is why {}{} is OK.
https://golang.org/ref/spec#Address_operators

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Re: [go-nuts] how to declare type as interface{}

['Axel Wagner' via golang-nuts]

What's wrong with the first one?
The second one doesn't work because there are not interface composite
literals. So you need to actually have an interface{} variable to take the
address of.
The third one seems to work just fine: https://play.golang.org/p/zn2mL69VzPo

On Thu, Sep 3, 2020 at 10:32 PM Alexander Mills 
wrote:

> This works:
>
> var z interface{}
> if err := json.NewDecoder(resp.Body).Decode(); err != nil {
>  t.Fatal(err)
> }
>
> but this doesn't work:
>
> if err := json.NewDecoder(resp.Body).Decode({}{}); err != nil {
>  t.Fatal(err)
> }
>
> and this doesn't work:
>
> if err := json.NewDecoder(resp.Body).Decode({}{}); err != nil {
>  t.Fatal(err)
> }
>
>
> my goal is to unmarshal to an anonymous variable and discard it, as part
> of a test. Is there a way to do this?
>
> --
> You received this message because you are subscribed to the Google Groups
> "golang-nuts" group.
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> 
> .
>

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[go-nuts] how to declare type as interface{}

[Alexander Mills]

This works:

var z interface{}
if err := json.NewDecoder(resp.Body).Decode(); err != nil {
 t.Fatal(err)
}

but this doesn't work:

if err := json.NewDecoder(resp.Body).Decode({}{}); err != nil {
 t.Fatal(err)
}

and this doesn't work:

if err := json.NewDecoder(resp.Body).Decode({}{}); err != nil {
 t.Fatal(err)
}


my goal is to unmarshal to an anonymous variable and discard it, as part of 
a test. Is there a way to do this?

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