array_accessing.swift

let admins = [User(name: "Admin")]
// [{name "Admin"}]
let guests = [User(name: "Guest")]
// [{name "Guest"}]

var allUsers = admins + guests
// [{name "Admin"}, {name "Guest"}]

// TODO: - Use .isEmpty instead of .count
if allUsers.isEmpty {
    print("User list is empty")
} else {
    // TODO: - Use subscript functionality
    let user = allUsers[0]
    // OR
    // user = allUsers.first
    print("First user is: \(user)")
    // First user is: User(name: "Admin")\n
}

// TODO: - Subscript syntax for range
allUsers[0...1] = [User(name: ""), User(name: "")]
// [{name ""}, {name ""}]