我收到导致AppDelegate崩溃的错误Terminatingappduetouncaughtexception'com.google.greenhouse',reason:'ErrorDomain=com.google.greenhouseCode=-102"UnabletocorrectlyconfiguresubspecAnalytics"UserInfo={NSLocalizedFailureReason=TrackingIDmustnotbenilorempty.,NSLocalizedDescription=Unabletocorrectlyconfiguresubspe
我收到导致AppDelegate崩溃的错误Terminatingappduetouncaughtexception'com.google.greenhouse',reason:'ErrorDomain=com.google.greenhouseCode=-102"UnabletocorrectlyconfiguresubspecAnalytics"UserInfo={NSLocalizedFailureReason=TrackingIDmustnotbenilorempty.,NSLocalizedDescription=Unabletocorrectlyconfiguresubspe
UIScrollView有一个符合UIScrollViewDelegate的委托(delegate)属性protocolUIScrollViewDelegate:NSObjectProtocol{//...}classUIScrollView:UIView,NSCoding{unowned(unsafe)vardelegate:UIScrollViewDelegate?//...}UICollectionView使用不同类型的UICollectionViewDelegate覆盖此属性protocolUICollectionViewDelegate:UIScrollViewDelegat
UIScrollView有一个符合UIScrollViewDelegate的委托(delegate)属性protocolUIScrollViewDelegate:NSObjectProtocol{//...}classUIScrollView:UIView,NSCoding{unowned(unsafe)vardelegate:UIScrollViewDelegate?//...}UICollectionView使用不同类型的UICollectionViewDelegate覆盖此属性protocolUICollectionViewDelegate:UIScrollViewDelegat
当我这样做时得到编译器的投诉classViewController:UIViewController{vardelegate:AppDelegateoverridefuncviewDidLoad(){super.viewDidLoad()//Doanyadditionalsetupafterloadingtheview,typicallyfromanib.//self.appDelegate=UIApplication.sharedApplication().delegate;}@IBActionfuncgetData(sender:AnyObject){}@IBActionfuncL
当我这样做时得到编译器的投诉classViewController:UIViewController{vardelegate:AppDelegateoverridefuncviewDidLoad(){super.viewDidLoad()//Doanyadditionalsetupafterloadingtheview,typicallyfromanib.//self.appDelegate=UIApplication.sharedApplication().delegate;}@IBActionfuncgetData(sender:AnyObject){}@IBActionfuncL
像匿名方法一样，我使用“delegate”关键字声明的委托(delegate)是匿名委托(delegate)吗？namespaceTest{publicdelegatevoidMyDelegate();classProgram{staticvoidMain(string[]args){DelegateTesttst=newDelegateTest();tst.Chaining();Console.ReadKey(true);}}classDelegateTest{publiceventMyDelegatedel;publicvoidChaining(){del+=delegate{Co
像匿名方法一样，我使用“delegate”关键字声明的委托(delegate)是匿名委托(delegate)吗？namespaceTest{publicdelegatevoidMyDelegate();classProgram{staticvoidMain(string[]args){DelegateTesttst=newDelegateTest();tst.Chaining();Console.ReadKey(true);}}classDelegateTest{publiceventMyDelegatedel;publicvoidChaining(){del+=delegate{Co
分支选择函数时，使用三元运算符选择函数可能有意义，但这是不可能的。为什么？publicclassDemo{protectedboolbranch;protectedvoiddemo1(){}protectedvoiddemo2(){}publicActionDoesntWork(){returnbranch?demo1:demo2;}}编译器产生以下错误:Cannotimplicitlyconverttype`methodgroup'to`System.Action' 最佳答案 问题是demo1不是一个简单的表达式，它是一个方法。并
分支选择函数时，使用三元运算符选择函数可能有意义，但这是不可能的。为什么？publicclassDemo{protectedboolbranch;protectedvoiddemo1(){}protectedvoiddemo2(){}publicActionDoesntWork(){returnbranch?demo1:demo2;}}编译器产生以下错误:Cannotimplicitlyconverttype`methodgroup'to`System.Action' 最佳答案 问题是demo1不是一个简单的表达式，它是一个方法。并
