[go-nuts] Re: gob: decoding into local type []float64, received remote type []float

[cpu...@gmail.com]

Turns out that the decoding problem only exist when I reuse the encoder:

b := new(bytes.Buffer)
enc := gob.NewEncoder(b)

for param := range in {
b.Reset()
if err := enc.Encode(&param.Val); err != nil {
panic(err)
}

// send encoded data
}

When I create a new encode inside the loop things are fine. I couldn't find 
anything regarding enc that should prevent reusing it?

Cheers,
Andi
On Sunday, November 28, 2021 at 9:10:37 PM UTC+1 cpu...@gmail.com wrote:

> I'm trying to transfer arbitrary structs over gRPC. To achieve this I've 
> trying to use gob for encoding the interface{} part of the structs. The 
> code looks somewhat like https://go.dev/play/p/4Q5CQE4Wcy2 but not 
> entirely.
>
> Two things strike me strange:
> - I receive "gob: decoding into local type []float64, received remote type 
> []float" during Decode when the interface is a []float64
> - I need to use &res.Val (which is an interface) or it will stay nil. 
> Using res.Val (which imho works with JSON when the target is an interface) 
> does always lead to nil result.
>
> I would appreciate any hint how to gRPC or gob.Encode interfaces properly.
>
> Cheers,
> Andi
>
>

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