iOS多线程编程之二——NSOperation与NSOperationQueue 一、NSOperation解析 NSOperation是基于Object-C封装的一套管理与执行线程操作的类。这个类是一个抽象类,通常情况下,我们会使用NSInvocationOperation和NSBlockOperation这两个子类进行多线程的开发,当然我们也可以写继承于NSOperation的类,封装我们自己的操作类。 1、...
NSOperation
这种类似不是一个巧合,在早期,MacOX 与 iOS 的程序都普遍采用Operation Queue来进行编写后台线程代码,而之后出现的GCD技术大体是依照前者的原则来实现的,而随着GCD的普及,在iOS 4 与 MacOS X 10.6以后,Operation Queue的底层实现都是用GCD来实现的。 那这两者直接有什么区别呢? GCD是底层的C语言构成的API,而NSO...
// set OperationQueue in Server to .userInitiated, // prevent Server from not responding self.webServer = Server(qualityOfService: .userInitiated) self.webServer!.route(.GET, "pose", self.serverHandlePoseRequest) self.webServer!.serveBundle(.main, "/") @@ -42,10 +44,3 @@ public clas...
Queuer is a queue manager, built on top of OperationQueue and Dispatch (aka GCD). - FabrizioBrancati/Queuer
//创建一个NSOperationQueue实例并添加operation varqueue:NSOperationQueue=NSOperationQueue() queue.addOperation(operation) } //定义一个下载图片的方法,线程调用 funcdownloadImage(){ varimageUrl ="http://hangge.com/blog/images/logo.png" vardata =NSData(contentsOfURL:NSURL(string: imageUrl)!, optio...
If a set portable radio communication machine is inserted to, for example, the cradle in an automobile and is used, the MPU 203 discriminates absence of the user to start the standby operation of a prescribed function in accordance with registered contents when ignition is turned off. When ...
A push operation adds an item to the top of a ( ).A、 queueB、 treeC、 stackD、 date stru
Failed to update firewall rules for Azure Synapse workspace. I can't add any IP or remove it in Synapse's firewall rules. I've tried using the Azure CLI too. Has anyone ever experienced this? yddcw, The error message "ReplaceAllIpFirewallRulesOperationQueue...
Users that belong to the group can be assigned a task in one of the following ways: Assign To Group Queue: Assigns the task to the group’s shared To Do list. Assign to Random User In Group: Assigns the task to any user who belongs to the specified group profile. Use the Browse ...