struct UserRecord {
    id: Int,
    name: Option<String> = None,
    region: Region = Region::Unknown,
}

enum Region {
    Unknown,
    East,
    West,
}

[
    UserRecord(1, Some("cympfh"), Region::East),
    UserRecord { id = 2, name = Some("Alan"), region = Region::West, },
    UserRecord { id = 3, name = Some("Bob") },
    UserRecord { id = 4, region = Region::East },
]