{"id":24976025,"url":"https://github.com/dulingkang/wwdcnote","last_synced_at":"2025-03-29T08:16:21.290Z","repository":{"id":92096735,"uuid":"48268879","full_name":"dulingkang/WWDCNote","owner":"dulingkang","description":"WWDC note every year.","archived":false,"fork":false,"pushed_at":"2015-12-19T06:52:50.000Z","size":12,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-02-03T21:59:05.961Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Swift","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/dulingkang.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2015-12-19T04:51:18.000Z","updated_at":"2020-04-15T14:09:04.000Z","dependencies_parsed_at":"2023-03-21T05:24:03.530Z","dependency_job_id":null,"html_url":"https://github.com/dulingkang/WWDCNote","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/dulingkang%2FWWDCNote","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/dulingkang%2FWWDCNote/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/dulingkang%2FWWDCNote/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/dulingkang%2FWWDCNote/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/dulingkang","download_url":"https://codeload.github.com/dulingkang/WWDCNote/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":246156416,"owners_count":20732397,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-02-03T21:59:16.716Z","updated_at":"2025-03-29T08:16:21.270Z","avatar_url":"https://github.com/dulingkang.png","language":"Swift","funding_links":[],"categories":[],"sub_categories":[],"readme":"# WWDCNote\nWWDC note every year.\n\n\u003e 新特性：基本类型、类型匹配、可检查性、协议扩展、错误处理\n\n---\n\n## 基本类型\n###枚举\n```\nenum Animals {\n    case Dog, Cat, Troll, Dragon\n}\nlet a = Animals.Dragon\n```\n\n- 在枚举中加入类型:\n\n```\nenum Either\u003cT1, T2\u003e {\n    case First(T1)\n    case Second(T2)\n}\n```\n\n- 递归枚举\n递归枚举中需要加入indirect修饰：\n```\nenum Tree\u003cT\u003e {\n    case Leaf(T)\n    indirect case Node(Tree, Tree)\n}\n```\n\n### do 用法\n\n```\ndo {\n    let a = Animals.Troll\n    print(a)\n}\n```\n\nrepeat ... while:\n\n```\nrepeat {\nlet a = Animals.Dog\nprint(a)\n} while(false)\n```\n\n### Option Sets\n\n```       \n var viewAnimationOptions: UIViewAnimationOptions = [.Repeat, .CurveEaseIn, .TransitionCurlUp]\n viewAnimationOptions = []\n if viewAnimationOptions.contains(.TransitionCurlUp) {        \n        }\n```\n\n- 定义一个Option Set\n\n```\nstruct MyFontStyle: OptionSetType {\n    let rawValue: Int\n    static let Bold = MyFontStyle(rawValue: 1)\n    static let Italic = MyFontStyle(rawValue: 2)\n    static let Underline = MyFontStyle(rawValue: 4)\n    static let Strikethrogh = MyFontStyle(rawValue: 8)\n}\nvar myFont: MyFontStyle = []\nmyFont = [.Underline]\nmyFont = [.Bold, .Italic]\nif myFont.contains(.Strikethrogh) {\n    print(\"yes\")\n}\n```\n\n### 函数和方法\n- 所有函数的定义都是一样的，调用时，第一个label隐藏，以后的Label会显示：\n\n```\nclass Widget {\n    func save(name: String, encrypt: Bool) {\n    }\n}\nlet widget = Widget()\nwidget.save(\"go\", encrypt: true)\n```\n\n- 如果如果想让第一个函数Label显示出来，可以这样：\n\n```\nfunc save(name name: String,  encrypt: Bool) {}\nwidget.save(name: \"go\", encrypt: false)\n```\n\n- 如果想让哪一个参数隐藏，可以在label前面加_和一个空格：\n\n```\nfunc save(name name: String, _ encrypt: Bool) {}\nwidget.save(name: \"go\",  false)\n```\n\n### 警告给出提示\n- 在结构体中定义的函数中，如果更改了结构体中的变量，需要用mutating修饰函数：\n\n```\nstruct MyCoordinates {\n    var points: [CGPoint]\n    mutating func updatePoint() {\n        points[20].x = 20\n    }\n}\n```\n\n- var和let的提示，不变的变量用let，使用中会给变量赋值的用var\n\n## 类型匹配\n用guard来确保存在：\n\n```\nfunc process(json: AnyObject) -\u003e Either\u003cString,String\u003e {\n    guard let name = json[\"name\"] as? String,\n        let year = json[\"year\"] as? Int else {\n            return .Second(\"bad input\")\n    }\n    print(name, year)\n}\n```\n\n- 用switch类型匹配\n\n```\nswitch bar() { \ncase .MyEnumCase(let value):where value != 42:\n doThing(value)\ndefault: break\n}\n```\n可以这样写：\n\n```\nif case .MyEnumCase(let value) = bar() where value != 42 { doThing(value)\n}\n```\n\n- for ... in\n未完待续。。。\n\n\n\n\n\n\n\n## 可检查性\n## 协议扩展\n## 错误处理\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdulingkang%2Fwwdcnote","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdulingkang%2Fwwdcnote","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdulingkang%2Fwwdcnote/lists"}