Lot's of people will jump up and down that this is "unsafe," but if you're
building a utility and have complete control of the code something like
this might work: https://play.golang.org/p/eDPoI83C0u
On Sunday, October 2, 2016 at 10:39:08 PM UTC-6, Sarah Ahmed wrote:
>
> Hello,
> I am trying to initialize the "State" to a default value "NY" of Address
> slice.
> The following code only sets the first element's State.
> I do not know how many element would be in my input.
> Is there any easy way to do it?
> Thanks in advance for your help.
>
> package main
>
> import (
> "encoding/json"
> "fmt"
> "log"
> )
>
>
> type Address struct {
> Street string `json:"Street"`
> City string `json:"City"`
> State string `json:"State"`
> }
>
>
> type Person struct {
> Name string `json:"Name"`
> Adr []Address `json:"Address"`
> }
>
>
> var p = &Person{Adr: []Address{Address{State: "NY"}}}
>
>
> func main() {
> input:= "{\"Name\": \"User1\",\"Address\":[{\"Street\": \"Main
> St\",\"City\": \"City One\"},{\"Street\": \"Central St\",\"City\": \"City
> Two\"}]}"
> err := json.Unmarshal([]byte(input), &p)
> if err != nil {
> log.Printf("Unmarshal error: ", err.Error())
> }
> fmt.Printf("%#v", p)
> }
>
>
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