Namespacing with enums 1

namespacing1.swift

struct API1 {
    static let BaseURL = "api.airvisual.com/v2/nearest_city?lat={{LATITUDE}}&lon={{LONGITUDE}}&key={{YOUR_API_KEY}}"
    static let Key = "your_api_key"
}

enum API2 {
    static let BaseURL = "api.airvisual.com/v2/nearest_city?lat={{LATITUDE}}&lon={{LONGITUDE}}&key={{YOUR_API_KEY}}"
    static let Key = "your_api_key"
}

let baseURL1 = API1.BaseURL
let baseURL2 = API2.BaseURL

let api1 = API1()
let api2 = API2() // Compiler Error: 'API2' cannot be constructed because it has no accessible initializers