无论如何，不​​声明结构就将编码的结构作为JSON发送？

Question

I would like to know how I could simplify this piece of code:

type PP struct {
    Profile_picture string `json:"profile_picture"`
}

json.NewEncoder(w).Encode(PP {result.Profile_picture})

Something like:

json.NewEncoder(w).Encode({result.Profile_picture})

^ this give me: syntax error: missing operand

And to get rid of:

type PP struct {
    Profile_picture string `json:"profile_picture"`
}

Thanks. Sorry for my english.

Answer 1

json.NewEncoder(w).Encode(
    map[string]string{"profile_picture": result.Profile_picture},
)

would work — maps with string keys encode to JSON as objects, and you can build up whatever you like with them. It's not shorter, but it does avoid the helper type.