无论如何，不​​声明结构就将编码的结构作为JSON发送？

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.

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.

Alternatively to hobb's answer, you could also use an anonymous struct.

json.NewEncoder(w).Encode(
    struct {
        Pp string `json:"profile_picture"`
    }{result.Profile_picture},
)