delegate

Class 'ViewController' has no initializers in swift

匿名 (未验证) 提交于 2019-12-03 01:52:01
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: Getting the complaint from the compiler when I am doing this class ViewController: UIViewController { var delegate : AppDelegate override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. //self.appDelegate = UIApplication.sharedApplication().delegate; } @IBAction func getData(sender : AnyObject) { } @IBAction func LogOut(sender : AnyObject) { } } However, if I just add ? at the end of AppDelegate like below and the error is gone. class ViewController: UIViewController { var

jQuery: live() vs delegate()

匿名 (未验证) 提交于 2019-12-03 01:52:01
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'm using jQuery in my web application. While reading its documentation I read about live() and delegate() . Although they have explained both methods, I don't understand the exact difference between them. Also not sure about which method is ideal in which scenario. Please help me to get clear understanding of these methods. Thanks 回答1: .live() requires you run the selector immediately, unless you're using the result it's very wasteful. The event handler here is attached to document , so all event of that type from any elements bubbling must

ImageMagick no decode delegate

匿名 (未验证) 提交于 2019-12-03 01:49:02
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): 由 翻译 强力驱动 问题: I'm trying to convert an image with imagemagick, but I'm getting this error: convert: no decode delegate for this image format `//i.imgur.com/nTheJ.jpg' @ error/constitute.c/ReadImage/532. I'm doing this: convert http : //i.imgur.com/nTheJ.jpg -resize 600×600 filarkiv/billeder/produkter/s236-085145.jpg I have the following delegates: DELEGATES freetype jpeg jng mpeg png x11 xml zlib Anyone knows what the problem is? 回答1: substitude the × in -resize 600×600 with a capital X and it should work. - resize 600X600 回答2: I had this error

“Expected class, delegate, enum, interface or struct” error on public static string MyFunc(). What's an alternative to “string”?

匿名 (未验证) 提交于 2019-12-03 01:49:02
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'm getting an error when I attempt to use the following static function. Error: Expected class, delegate, enum, interface, or struct Function (and class): namespace MyNamespace { public class MyClass { // Some other static methods that use Classes, delegates, enums, interfaces, or structs public static string MyFunc(string myVar){ string myText = myVar; //Do some stuff with myText and myVar return myText; } } } This is causing the compiler to angrily (in red) underline the string part of public static string . So, I assume this means string

ImageMagick no decode delegate

匿名 (未验证) 提交于 2019-12-03 01:47:02
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): 由 翻译 强力驱动 问题: I'm trying to convert an image with imagemagick, but I'm getting this error: convert: no decode delegate for this image format `//i.imgur.com/nTheJ.jpg' @ error/constitute.c/ReadImage/532. I'm doing this: convert http : //i.imgur.com/nTheJ.jpg -resize 600×600 filarkiv/billeder/produkter/s236-085145.jpg I have the following delegates: DELEGATES freetype jpeg jng mpeg png x11 xml zlib Anyone knows what the problem is? 回答1: substitude the × in -resize 600×600 with a capital X and it should work. - resize 600X600 回答2: I had this error

Undefined symbols for architecture armv7: “_OBJC_CLASS_$_SSZipArchive”

匿名 (未验证) 提交于 2019-12-03 01:46:01
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 am try using Extractzipfile plugin at this: https://github.com/phonegap/phonegap-plugins/tree/master/iOS/ExtractZipFile But when i compiler with Xcode 4.6.1 in sdk 6.1 so it throws an error: Undefined symbols for architecture i386: "_OBJC_CLASS_$_SSZipArchive", referenced from: objc-class-ref in ExtractZipFilePlugin.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) I try to do the issue at here: Undefined symbols for architecture armv7 SSZipArchive But it shows

Cannot convert anonymous method to type 'System.Windows.Threading.DispatcherPriority' because it is not a delegate type

匿名 (未验证) 提交于 2019-12-03 01:39:01
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): 由 翻译 强力驱动 问题: Can anyone explain what I need to do to get past this error? "Cannot convert anonymous method to type 'System.Windows.Threading.DispatcherPriority' because it is not a delegate type" private void Test ( object sender ) { base . Dispatcher . BeginInvoke ( delegate { //some code }, new object [ 0 ]); } Thanks 回答1: If you're using .NET 3.5 SP1 and upwards, then you can add a reference to System.Windows.Presentation.dll and make sure you have using System.Windows.Threading; at the top of the file. It contains extension methods that are

DidDiscoverPeripheral delegate method is not called

匿名 (未验证) 提交于 2019-12-03 01:39:01
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 am working with iphone5,and scanning for the device with the UUID.and i want to get list of available bluetooth device in my apps,but didDiscoverPeriphral delegate method is not call. here i give my code. - (id)init { NSLog(@"hello init"); if ((self = [super init])) { CM = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_main_queue()]; } return self; } - (void)viewDidLoad { CM = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_main_queue()]; isOn=NO; [super viewDidLoad]; // Do any additional setup after

iOS 5 UIWebview Delegate: WebKit discarded an uncaught exception in the webView:decidePolicyForNavigationAction

匿名 (未验证) 提交于 2019-12-03 01:38:01
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): 由 翻译 强力驱动 问题: I am using the delegate method shouldStartLoadWithRequest to catch link clicks and handle specific cases inside my app instead of allowing the webView to navigate to the link. In this code, I am attempting to push a new ViewController onto the stack. Immediately after the attempt to push the view, I get a crash with the following message in my console: WebKit discarded an uncaught exception in the webView : decidePolicyForNavigationAction : request : frame : decisionListener : delegate : My code looks like this: -( BOOL ) webView :

How to pass argument to delegate method in Rails

匿名 (未验证) 提交于 2019-12-03 01:35:01
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): 由 翻译 强力驱动 问题: I would like to have a Dashboard to display summary of multiple models, and I implemented it using Presenter without its own data. I use an ActiveModel class (without data table): class Dashboard attr_accessor : user_id def initialize ( id ) self . user_id = id end delegate : username , : password , : to => : user delegate : address , : to => : account delegate : friends , : to => : friendship end By delegate, I want to be able to call Dashboard.address and get back Account.find_by_user_id(Dashboard.user_id).address . If Dashboard