Path1.swift

// So from the Objc.io talk, we learn about a way of representing filesystem paths that can point to either files or directories.
// Internally, these are represented as an array of path elements. Let's do that too:
public struct Path<Element> {

    private var components: [String]

    fileprivate func append<T>(_ args: String ...) -> Path<T> {
        return Path<T>(components + args)
    }

    fileprivate init(_ components: [String]) {
        self.components = components
    }

    var rendered: String {
        return components.joined(separator: "/")
    }
}