delegate

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a UIViewController that is a UISearchBarDelegate and a MKMapViewDelegate . The searchBarSearchButtonClicked event works fine, but when testing in iOS 4.2 the searchBarCancelButtonClicked never gets called when hitting the cancel button. In 4.3 everything works fine. I have other views with identical code and it works fine. I have triple checked the method signatures. Could it be something to do with the MapView, or am I doing something blatantly wrong? My .h file: @interface MyViewController : UIViewController <UISearchBarDelegate

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Got a singleton class, so called RequestManager, which shall handle requests made by different modules and background tasks of my application. @interface RequestFactory : NSObject - (void)requestDataWith:(NSString *)token id:(NSString *)id sender:(id<RequestFactoryDelegate>)sender; ... @end Then I got another class, so called SessionDelegate, which shall handle all the callbacks during the request. @interface SessionDelegate : NSObject <NSURLSessionDelegate, NSURLSessionTaskDelegate, NSURLSessionDataDelegate> @property (weak, nonatomic) id

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Given the following code: public class C { public void M() { var x = 5; Action action = y => Console.WriteLine(y); } } Using VS2013, .NET 4.5. When looking at the decompiled code, we can see that the compiler is caching the delegate at the call site: public class C { [CompilerGenerated] private static Action CS$9__CachedAnonymousMethodDelegate1; public void M() { if (C.CS$9__CachedAnonymousMethodDelegate1 == null) { C.CS$9__CachedAnonymousMethodDelegate1 = new Action (C. b__0); } Action arg_1D_0 = C.CS$9__CachedAnonymousMethodDelegate1; }

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a simple form, where each line consists of 3 input fields. on one of those fields, I use jscolor.js (field has a class="color" and thus binds the JS). However, when I add new lines using jQuery's delegate() , the input field doesn't bind the JS and the expected functionality is not there. http://jsfiddle.net/alexwald/qARzP/ <script> var line = '<li class="form_line" id="line"> <span> <label for="item">Item:</label> <input type="text" required="required" placeholder="what item is this?" id="item" name="item[]> </span> <span> <label for

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Problem: ImageMagick convert is unable to crop image. It looks like it doesn't recognize the image type? What I've Tried: I've searched around online and I've seen several similar issues but not mine. I've attempted their solutions including Uninstalling and reinstalling ImageMagick via brew. identify -list format (JPEG, GIF, PNG, TIFF, etc were all there and all had rw permissions) convert -version (png is is among the built-in delegates) convert pic1.png pic1-jpg.jpg (this worked fine) convert pic1-jpg.jpg pic1-jpg.jpg (this worked fine)

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Does C++11 provide delegates? If not, what is the best (most efficient) way to do something similar in C++? Boost.Signals? FastDelegate? Something else? 回答1: You can get delegate-like semantics using bind to bind a member function to a class instance: #include <functional> struct C { void Foo(int) { } }; void Bar(std::function<void(int)> func) { func(42); // calls obj.Foo(42) } int main() { using namespace std::placeholders; C obj; Bar(std::bind(&C::Foo, obj, _1)); } In this example, Bar() takes anything that has a single int parameter and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: When using myDelegate -= eventHandler ReSharper (version 6) issues: Delegate subtraction has unpredictable result The rational behind this is explained by JetBrains here . The explanation makes sense and, after reading it, I'm doubting all my uses of - on delegates. How then , can I write a non-auto event without making ReSharper grumpy? or, is there a better and/or "correct" way to implement this? or, can I just ignore ReSharper? Here is simplified code: public delegate void MyHandler (object sender); MyHandler _myEvent; public event

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Started a Cocos2D 2.1 template (with no physics engine) in Xcode 4.5, targeted for iOS 6 and iPad. In the CDAudioManager.m file, the following code... AVAudioSession* session = [AVAudioSession sharedInstance]; session.delegate = self; // Which is what is automatically generated by the template. ...generates the following warning... "delegate deprecated: first deprecated in iOS 6" So I go to the apple developer documentation, and it says under "delegate," "Deprecated in iOS 6.0. Use the notifications described in the Notifications section of

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: UIScrollView has a delegate property which conforms to UIScrollViewDelegate protocol UIScrollViewDelegate : NSObjectProtocol { //... } class UIScrollView : UIView, NSCoding { unowned(unsafe) var delegate: UIScrollViewDelegate? //... } UICollectionView overrides this property with a different type UICollectionViewDelegate protocol UICollectionViewDelegate : UIScrollViewDelegate, NSObjectProtocol { //... } class UICollectionView : UIScrollView { unowned(unsafe) var delegate: UICollectionViewDelegate? //... } When I try to override

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to know how can I use a custom delegate? 回答1: Maybe an example will help you: #import <UIKit/UIKit.h> @protocol VSKeypadViewDelegate @required -(int)numberOfRows; -(int)numberOfColumns; -(NSString*)titleForButtonOnRow:(int)row andColumn:(int)column; -(id)valueForButtonOnRow:(int)row andColumn:(int)column; -(CGSize)sizeForButtonOnRow:(int)row andColumn:(int)column; -(void)receivedValue:(id)value; -(CGPoint)keypadOrigin; @optional -(NSArray *)additionalButtonsForKeypad; //-(UIColor *)keypadBackgroundColor; //-(UIColor *