You must export the struct fields in order for package json to see them.
> On Oct 19, 2016, at 8:43 PM, eric <miraze...@gmail.com> wrote:
>
> hi, i am newer in golang.
>
> i want to marshal pointer value to json.
>
> but, i can't. how can i do that ?
>
> thanks,
>
>
> package main
>
> import (
> "encoding/json"
> "fmt"
> )
>
> type KV struct {
> k string
> v string
> }
>
> func main() {
> kv := []*KV{}
>
> obj := new(KV)
> obj.k = "eric"
> obj.v = "23"
> kv = append(kv, obj)
>
> obj = new(KV)
> obj.k = "robot"
> obj.v = "32"
>
> kv = append(kv, obj)
>
> fmt.Printf("%d\n", len(kv))
> fmt.Printf("%v\n", kv)
>
> b, _:= json.MarshalIndent(kv, "", " ")
> fmt.Println(string(b)) // <--- not work,,,
> }
>
> output:
> 2
> [0x1050e140 0x1050e150]
> [
> {},
> {}
> ]
>
> https://play.golang.org/p/BcsGFjnQt9 <https://play.golang.org/p/BcsGFjnQt9>
>
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