kayoslab

import Foundation

extension Collection {
    /// Safe subscription for collection elements.
    ///
    /// - Parameter safe: The index of which the element should be returned.
    /// - Returns: The element at the given index if present, otherwise nil.
    subscript (safe index: Index) -> Element? {
        return indices.contains(index) ? self[index] : nil
    }

kayoslab

import Foundation

let defaults = UserDefaults(suiteName: "GistApplication")

/// A Property wrapper around UserDefaults which makes it easier to interact with.
@propertyWrapper struct UserDefault<T> {
    
    /// The key of the entry which should be added to the defaults.
    let key: String