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): 由 翻译 强力驱动 问题: Let's say I have a ListView of clickable delegate components (or GridView or Repeater ). These delegate components need to emit a signal along with custom data when triggered that can be picked up by the parent of the ListView . How can this signal binding be achieved? e.g. The following code is my attempt but I don't know how to bind the trigger signal of the delegate component to the componentTriggered signal in the root item? Item { id : root anchors . fill : parent signal componentTriggered ( string name ) onComponentTriggered

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 created a very simple app to download a text file from my web server. I have this working perfectly with NSURLConnection, but am trying to migrate over to NSURLSession instead. The issue I am having is that none of the delegate methods are being called. My server is password protected so I need to use the basic http authentication to access the file, but when the didReceiveChallenge method is never called. The line of code [getFileTask resume] seems to have no effect on anything. My setup is as follows: @interface ViewController :

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 should anonymous methods be used when defining a delegate and when should formally defined methods be used when defining a delegate ? 回答1: If you need to use the same logic in more than one place, it makes sense to use a separate method. If you only need to use the logic once and it's fairly short, it makes sense to use an anonymous function. If the delegate needs access to local variables in the method which is creating it, anonymous functions act as closures which can also be very handy. Additionally, an anonymous function can be

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 trying to respond to a click within a textfield . When the click occurs, I am going to open a panel . My initial thought was to use a delegate method to respond to the click event - but I found that: This method doesn't work: (void)textDidBeginEditing:(NSNotification *)aNotification This method does work, but only when I actually edit the text within the text field, not when I first click it. And - if I edit the text a second time, this method stops working: (void)controlTextDidBeginEditing:(NSNotification *)aNotification I could use as

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've been trying to create a generic event. Basically it should look like this: namespace DelegateTest { class Program { static void Main(string[] args) { var lol = new SomeClass(); lol.SomeEvent += handler; } static void handler(object sender, SomeDerivedClass e) { } } class SomeClass { public delegate void SomeEventDelegate<in T>(object sender, T data); public event SomeEventDelegate<ISomeInterface> SomeEvent; } interface ISomeInterface { } class SomeDerivedClass : ISomeInterface { } } I want to allow the user to pass any delegate which's

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 understand how to catch a "text changed" event from a text field in my window. I'm used to Java's "action listeners", and can't find anything similar in Objective-C/Cocoa. I searched for quite a while and found the "key value observing" protocol, but the observeValueForKeyPath: method (function?) only triggers when the value of my text field was changed in code (using [textfield setStringValue:...] , e.g.), not by typing in it. How can I "listen" to the value change when a user types in the text field? 回答1: You can

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 having this really weird problem with a conditional statement when setting an Action<T> value. It's not that I don't know how to work around this as it's pretty easy to solve by using a normal if . Here's my problem: public class Test { public bool Foo { get ; set ; } public Action <bool> Action { get ; set ; } public void A () { Action = Foo ? B : C ; //Gives compiler error } public void B ( bool value ) { } public void C ( bool value ) { } } This gives me a compiler error with the message There's no implicit conversion

Spring Security介绍 开源 提供企业级的安全认证和授权 Spring安全拦截器 认证管理器 认证模式 Basic HTTP 1.0中使用的认证方法，使用用户名和密码Base64编码的方式 浏览器弹出对话框，用户输入用户名和密码，加入头部 无状态 安全性不足 Digest 解决安全性问题 浏览器对用户名和密码请求方法，URL等进行MD5运算，发送到服务器 服务器获取到用户名密码，请求方法，URL等MD5运算，查看是否相等 安全性问题依然存在 X.509 访问决策管理器 运行身份管理器 常用权限拦截器 Spring-Security拦截器链流程图 介绍几个常用的Filter SecurityContextPersistenceFilter 基于ThreadLocal LogoutFilter 发送注销请求时，清空用户的session,cookie，重定向 AbstractAuthenticationProcessingFilter 用户登录的请求 DefaultLoginPageGeneratingFilter 生成登录页面 BasicAuthencationFilter SecurityContextHolderAwareRequestFilter 包装，提供额外的数据 RememberMeAuthemticationFilter 提供RememberMe功能

iOS经典面试题 前言 写这篇文章的目的是因为前两天同学想应聘iOS开发，从网上找了iOS 面试题 和答案让我帮忙看看。我扫了一眼，倒吸了一口冷气，仔细一看，气的发抖。整篇题目30多个没有一个答案是对的，总结这篇面试题的作者对iOS机制根本就是一知半解就敢发到网上，不管有心还是无心都是坑害新人。所以在这里总结一下这几年面试别人和被别人面试遇到的一些我认为比较好的基础题目分享给大家，进阶题目在后续补充。我的理解如果有错漏请一定指出，非常感谢！ 从12年开始做面试官到现在已经三个年头了，这期面过很多形形色色的开发，有腾讯的、有百度的、有小公司的、有做外包的，还有完全没有代码能力来做管理的。给我的感觉是百度出品的技术能力最好，基础知识、技术细节掌握的非常的扎实并且自信。腾讯出品技术细节上也非常厉害，平均来说比百度差一些，但是解决问题的能力非常强，思维很活跃大局观好。小公司、外包公司的同学技术细节、基础知识要差一些。我个人是非常反对以出身论英雄BAT出品就一定比其他公司的优秀，只能说BAT提供的技术氛围更好，你可以跟更多优秀的人共事，相比小公司技术进步更容易些。 这期间我也面了很多互联网公司，腾讯、百度、阿里、快播还有其他很多中小型公司，给我的感觉是中国整体的互联网面试官的态度非常糟糕，面试官经常性习惯性的迟到，理由有开会啦、在吃饭啦，最离谱的是没有任何理由就让你在那里等

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: EDIT2 - Rewrote the question I want to do some web service communication in the background. I am using Sudzc as the handler of HTTPRequests and it works like this: SudzcWS *service = [[SudzcWS alloc] init]; [service sendOrders:self withXML:@"my xml here" action:@selector(handleOrderSending:)]; [service release]; It sends some XML to the webservice, and the response (in this one, a Boolean) is handled in the selector specified: - (void)handleOrderSending:(id)value { //some controls if ([value boolValue] == YES) { //my stuff } } When I tried