Config Selection - Swift Programming

Programs often choose one configuration for local runs and another for production.

Pick a configuration

config_selection.swift

let useProduction = 
let localHost = "localhost"
let productionHost = "api.example.com"
let host = useProduction ? productionHost : localHost
let port = useProduction ? 443 : 8080
let endpoint = "\(host):\(port)"

print(endpoint)

let useProduction = 
let localHost = "localhost"
let productionHost = "api.example.com"
let host = useProduction ? productionHost : localHost
let port = useProduction ? 443 : 8080
let endpoint = "\(host):\(port)"

print(endpoint)

configuration A configuration value can select host names, ports, and other settings before the rest of a program starts.