create custom environmentvalues in swift

You can create custom environment values in Swift by defining an enum conforming to the CaseIterable and RawRepresentable protocols. Here's an example:

main.swift
enum Environment: String, CaseIterable {
    case development
    case staging
    case production
}
101 chars
6 lines

In this example, we define an enum called Environment with three cases: development, staging, and production. The RawRepresentable protocol enables us to create an enum with a raw type, which in this case is String. We can now use these cases to represent different environment values in our app.

To access the environment value, we can use the ProcessInfo class provided by Apple. The environment property of ProcessInfo returns a dictionary containing all environment variables.

Here's an example of how to get the custom environment variable we just created:

main.swift
let environmentString = ProcessInfo.processInfo.environment["MY_CUSTOM_ENVIRONMENT_VARIABLE"]
let environment = Environment(rawValue: environmentString ?? "") ?? .development
175 chars
3 lines

In this example, we first get the environment string value for our variable using ProcessInfo.processInfo.environment. We then create an instance of our Environment enum by using the rawValue initializer. If the environment string is empty or not a valid raw value, we default to the .development case.

Once we have the environment value in our app, we can use it to configure different settings, endpoints, or other functionality depending on the environment in which our app is running.