omitty 0.2.0

On-demand TypeScript-like Omit<> for Rust - generate type variants with omitted fields using #[omitty] and Omit! macro
Documentation 
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use omitty::omitty;

#[omitty]
mod api {
    #[derive(omitty::Omittable, Debug, Clone, serde::Serialize, serde::Deserialize)]
    pub struct User {
        pub id: u64,
        pub name: String,
        pub secret_token: String,
    }

    #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
    pub struct PublicUser {
        pub user: Omit!(User, secret_token),
    }
}

fn main() {
    let user = api::User {
        id: 42,
        name: "Alice".to_string(),
        secret_token: "super_secret".to_string(),
    };

    let public = api::PublicUser { user: user.into() };

    let json = serde_json::to_string(&public.user).unwrap();
    println!("JSON: {}", json);

    assert_eq!(public.user.id, 42);
    assert_eq!(public.user.name, "Alice");
}