Initialize an array of structs inside a nested struct in golang

Question

I am wondering how can I define and initialize and array of structs inside a nested struct, for example:

type State struct {     id string `json:"id" bson:"id"`     Cities  }  type City struct {     id string `json:"id" bson:"id"` }  type Cities struct {     cities []City } 

Now how can I Initialize such a structure and if someone has a different idea about how to create the structure itself.

Thanks

Answer 1

In your case the shorthand literal syntax would be:

state := State {     id: "CA",     Cities:  Cities{         []City {             {"SF"},         },     }, } 

Or shorter if you don't want the key:value syntax for literals:

state := State {     "CA", Cities{         []City {             {"SF"},         },     }, }     

BTW if Cities doesn't contain anything other than the []City, just use a slice of City. This will lead to a somewhat shorter syntax, and remove an unnecessary (possibly) layer:

type State struct {     id string `json:"id" bson:"id"`     Cities []City }  type City struct {     id string `json:"id" bson:"id"` }   func main(){     state := State {         id: "CA",         Cities:  []City{              {"SF"},         },     }      fmt.Println(state) }