草庐IT

swift - 错误 : value of type 'String' has no member 'Generator' in Swift

这个问题在这里已经有了答案:IteratethroughaStringSwift2.0(4个答案)关闭7年前。我在Swift中有这段代码:varpassword="MeetmeinSt.Louis"forcharacterinpassword{ifcharacter=="e"{print("foundane!")}else{}}抛出以下错误:valueoftype'String'hasnomember'Generator'inSwiftinline:forcharacterinpassword我试图在网上找到可能的错误,但我找不到(而且我是Swift的新手,并且试图通过语言的特性来导航

ios - 错误域=NSCocoaErrorDomain 代码=3840 "No string key for value in object around character 1."

这是从服务器返回的json字符串。我试图将其映射到对象映射器类并打印值,但出现以下错误。ErrorDomain=NSCocoaErrorDomainCode=3840"Nostringkeyforvalueinobjectaroundcharacter1."{'Status':False,'updatedStatus':True,'connectionStatus':True}下面是我的映射器类publicclassInfo:Mappable{internalletkStatusKey:String="Status"internalletkConnectionStatusKey:Str

ios - Collection View :cellForItemAtIndexPath: why my view has zero subviews?

请考虑以下代码:funccollectionView(collectionView:UICollectionView,cellForItemAtIndexPathindexPath:NSIndexPath)->UICollectionViewCell{letcell=collectionView.dequeueReusableCellWithReuseIdentifier("DataItemCell",forIndexPath:indexPath)asDataItemCollectionViewCellprintln("\(cell.parametersView.subviews.co

ios - swift 3 : Type 'Any?' has no subscript members

我的图表请求总是收到此错误??Type'Any?'hasnosubscriptmembers结果的错误点......这只发生在我转换为swift3......有人吗????letnextrequest:FBSDKGraphRequest=FBSDKGraphRequest(graphPath:"me/friends",parameters:["fields":"name,id,gender"],httpMethod:"GET")nextrequest.start{(connection,result,error)->VoidinguardletlistOfFriends=result[

ios - swift 错误 : "class cannot be constructed because it has no accessible initializers"

Xcode给我的Swift代码报错:'myColor'cannotbeconstructedbecauseithasnoaccessibleinitializersimportFoundationprotocolPrototype{funcClone()->T}classmyColor:Prototype{varred:Int?vargreen:Int?varblue:Int?init(){}funcClone()->myColor{letnewColor=myColor()newColor.red=self.rednewColor.green=self.greennewColor.b

ios - iCloud Key-Value-Store 同步问题(未调用 NSUbiquitousKeyValueStoreDidChangeExternallyNotification)

我正在为iOS编写一个小型通用游戏。高分将通过iCloudKey/Value存储跨设备同步。获取最新分数:funcretrieveHighestScore()->Int64{letiCloudScore:Int64=NSUbiquitousKeyValueStore.defaultStore().longLongForKey(KeyValueKeyClassification.KeyHighscore.toRaw())letlocalScore:Int64=Int64(NSUserDefaults.standardUserDefaults().integerForKey(KeyValu

ios - 在 Swift 上的哪里存储 API key ?

我有一堆APIkey和secret(Stripe、Cloudinary等),目前在我的应用程序中进行了硬编码。存放它们的正确位置在哪里?它们是否应该在服务器中,而我只将服务器URL存储在我的端(这样,如果key发生变化,应用程序将继续工作)?例如,我的应用委托(delegate)文件中有这个:funcconfigureStripe(){STPPaymentConfiguration.sharedConfiguration().publishableKey="pk_test_1234rtyhudjjfjjs"STPPaymentConfiguration.sharedConfigurat

【flink】Chunk splitting has encountered exception

执行任务报错:Chunksplittinghasencounteredexception错误信息截图: 完整的错误信息:16:30:43,911ERRORorg.apache.flink.runtime.source.coordinator.SourceCoordinator[SourceCoordinator-Source:CDCSourceorg.jobslink.flink.UserCDCJob]-UncaughtexceptionintheSplitEnumeratorforSourceSource:CDCSourceorg.flink.UserCDCJobwhilehandlingo

ios - parse.com key 类型无效,需要字符串,但得到数组

我尝试将我的数据保存到parse.com。我已经在parse.com中预制了一个名为“SomeClass”的类(class)。它有一个名为“mySpecialColumn”的列,数据类型为字符串。这是我尝试保存数据的代码:vargroupObject=PFObject(className:"SomeClass")groupObject.addObject("aaa",forKey:"mySpecialColumn")groupObject.saveEventually()如果我运行它,我会得到:错误:键mySpecialColumn的类型无效,应为字符串,但得到的是数组(代码:111,

ios - 错误 : Attemped to add a SKNode which already has a parent

我正在用Swift3和SpriteKit做一个游戏,我试图声明一个全局变量以在GameScene类的其余部分中使用它,但我做不到。我做了什么:classGameScene:SKScene{...letpersonaje=SKSpriteNode(imageNamed:"Ball2.png")...在全局声明之后,我尝试像那样在sceneDidLoad中使用它:...personaje.position=CGPoint.zeroaddChild(personaje)...我不知道为什么,但Xcode返回此错误:***Terminatingappduetouncaughtexception