the reason your snippet does not work is that you pass in *payload as T
and the zero value of a pointer type is nil and json unmarshal cannot
with nil pointer values. so would need to pass in payload as T and
*payload as P and somehow explain that P is *T and a
encoding.BinaryUnmarshaler. I am not versed enough in go generics to
know the solution, but would propose to take a simpler approach if possible.
On 5/27/22 18:24, Martin Schnabel wrote:
how about https://go.dev/play/p/YXOTLKpvXNI using json unmarshal
directly and without using binary marshaller.
or even https://go.dev/play/p/GFE3rnyx9f8 without the endpoint abstraction.
or maybe explain what you want to achieve other than unmarshalling a
json payload?
best regards
On 5/27/22 17:53, Jérôme LAFORGE wrote:
Hello,
I do some tests with generics with Go 1.18.
But I can't reach my goal.
With https://go.dev/play/p/7kxMEWtXcPG
I have:
```
panic: json: Unmarshal(nil *main.payload) goroutine 1 [running]:
main.main() /tmp/sandbox3884661607/prog.go:43 +0x112 Program exited.
```
Because payload (line 15) is nil
Any tips ?
Many thx.
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