Class NewQuestion

ch_04/final/src/main.rs:24–28

#[derive(Deserialize, Serialize, Debug, Clone)]
struct NewQuestion {
    title: String,
    content: String,
    tags: Option<Vec<String>>,
}

#[derive(Deserialize, Serialize, Debug, Clone, PartialEq, Eq, Hash)]
struct AnswerId(String);