| // ------------------------------------- | |
| // Swift Integer Quick Guide | |
| // ------------------------------------- | |
| // Created by Keith Harrison http://useyourloaf.com | |
| // Copyright (c) 2017 Keith Harrison. All rights reserved. | |
| // | |
| // Redistribution and use in source and binary forms, with or without | |
| // modification, are permitted provided that the following conditions are met: | |
| // |
| // enable strict mode, we use this in every JS file | |
| // for more info see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode | |
| 'use strict'; | |
| // declare our module and it's dependencies (empty array because there are no deps) | |
| angular.module('example', []); |
| extension CollectionType where Index: Comparable { | |
| subscript (safe index: Index) -> Generator.Element? { | |
| guard startIndex <= index && index < endIndex else { | |
| return nil | |
| } | |
| return self[index] | |
| } | |
| } |
| /** | |
| * The contract of this method is that the method will check if unsafeThing is nil before using it. | |
| * This contract is not encoded in the method signature and is not compiler-enforced! | |
| */ | |
| func safelyHandlesIUO(unsafeThing: String!) { | |
| println("This isn't an optional. We can use it directly but may find nil and crash: \(unsafeThing)") | |
| if let safeThing = unsafeThing { | |
| println("String is \(count(safeThing)) length") | |
| } else { | |
| println("Woah, we would have crashed if we passed it to count!") |
I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
\
| /* | |
| Distributed under The MIT License: | |
| http://opensource.org/licenses/mit-license.php | |
| Permission is hereby granted, free of charge, to any person obtaining | |
| a copy of this software and associated documentation files (the | |
| "Software"), to deal in the Software without restriction, including | |
| without limitation the rights to use, copy, modify, merge, publish, | |
| distribute, sublicense, and/or sell copies of the Software, and to |
