Pure Swift utility for command-line options and arguments, inspired by Python's argpase module.
The following code is a Swift program that takes a list of integers and filters out the even numbers unless asked otherwise.
import ArgParse
let parser: ArgumentParser = [
.variadic("elements", defaultValue: [Int]()),
.flag("keep-even", alias: "-e"),
]
if let parseResult = try? parser.parse(CommandLine.arguments) {
let elements: [Int] = parseResult.result(for: "elements")!
let keepEven: Bool = parseResult.result(for: "keep-even")!
print(elements.filter { $0 % 2 != 0 || keepEven })
}