Akagi201
9/20/2014 - 10:21 AM
swift.md
desktop
web框架
swift for android
swift 开源
mac开发
OS X Human Interface Guidelines: 在 iBook 上可以找到，介绍 OS X 的界面设计规范， OS X 上的软件比较注重界面设计。The swift Programming language: 同样在 iBook 上可以搜索到，主要就是介绍 swift 语言，可以先通篇浏览一遍，后续遇到问题再去查。同时配合 Dash 查 Cocoa 的 API ， perfect 。Cocoa Programming for Mac OS X(5th): 第五版以上，里面用的是 swift 讲解，介绍的例子通俗易懂，全书的例子做一遍下来，开发简单的 OS X 程序不成问题。
社区
教程
- http://swifteducation.github.io/
- https://www.hackingwithswift.com/
- http://wiki.jikexueyuan.com/project/swift/
book
- http://swifter.tips/introduction/
- http://v2ex.com/t/134548
- The Swift Programming Language: https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/
- http://swifter.tips/
cheat sheet
- http://kpbp.github.io/swiftcheatsheet/
- http://www.raywenderlich.com/73967/swift-cheat-sheet-and-quick-reference
- http://mhm5000.gitbooks.io/swift-cheat-sheet/content/
video
type convert
15:38 Akagi201: print(Int("23")), then I got Optional(23) in the console, How can I get Int 23.
15:39 Psy: print(Int("23")!)
15:40 Psy: Akagi201: add the ! exclamation point to unwrap it
15:41 Akagi201: Psy: Thanks, it works, but when should I use the ! mark.
15:41 Akagi201: Everytime when I need to convert a type?
15:41 Psy: ! means force unwrap
15:42 Psy: if you have an optional object and you're sure it's not going to be nil when you use it, you can use !
15:42 Psy: if your object can be nil, then you use ? instead
15:44 Psy: note that ! represents an implicitly unwrapped optional