Struct

Choose Struct over class

Dynamic Member lookups

@dynamicMemberLookup
struct Car {
    subscript(dynamicMember member: String) -> String {
        let properties = ["brand": "Dodge", "name": "Viper SRT"]
        return properties[member, default: ""]
    }
}


let favCar = Car()
print(favCar.brand)
print(favCar.name)

https://www.hackingwithswift.com/articles/55/how-to-use-dynamic-member-lookup-in-swift

Private Initializer

Structs do provide default initializers but if we want to expose them we need to define them as public init.
https://docs.swift.org/swift-book/documentation/the-swift-programming-language/accesscontrol/#Default-Memberwise-Initializers-for-Structure-Types