runtime

New to Android - Drawing a view at runtime

由 馋奶兔 提交于 2019-11-30 05:08:58
问题 HI all, I'm just getting started with developing for Android. I'm looking to port one of my iPhone applications, but I'm kind of at a loss for how to draw a view at runtime (a view not declared in the XML). Basically, I want to draw a simple rectangle, but then be able to manipulate its frame after being drawn. Sorry if this is a really, really simple question, but I can't seem to find some equivalent to the iPhone SDK here. Thanks in advance! 回答1: It sounds like you want to experiment with

Bundle .NET dlls to run application in .NET-less machine?

由 北城以北 提交于 2019-11-30 05:03:01
问题 AFAIK, ngen turns MSIL into native code (also reffered to as pre-JIT), however I never payed too much attention at it's startup performance impact. Ngen'd applications still require the .NET base class libraries (the runtime). Since the base class libraries have everything our .NET assemblies need (correct?) would it be possible to ship the framework's DLLs with my ngen'd application so that it does not require the runtime to be installed? (e.g., the scenario for most Windows XP machines) Oh,

What is the exact meaning / purpose of the J and R flags in jshell?

由 百般思念 提交于 2019-11-30 04:03:38
问题 From the help information: -J<flag> Pass <flag> directly to the runtime system. Use one -J for each runtime flag or flag argument -R<flag> Pass <flag> to the remote runtime system. Use one -R for each remote flag or flag argument I cannot find an explanation in both the tools documentation and jshell user guide. Also, what is "the remote runtime system" in the context of jshell? 回答1: As I understand it, JShell has 3 main 'places' to execute code: In the current process (see

详解golang net之TCP底层

由 ≡放荡痞女 提交于 2019-11-30 03:37:48
golang版本1.12.9；操作系统：readhat 7.4 golang的底层使用epoll来实现IO复用。netPoll将文件描述符与底层进行了绑定。netpoll实现了用户的与底层网络IO相关的goroutine阻塞/非阻塞管理。 对netpoll的介绍按照这篇 文章 的思路按照tcp建链中的listen/accept/read/write/close动作详解过程。 下面以TCP为例完整解析TCP的建链/断链以及读写过程 listen流程： ListenTCP --> listenTCP --> internetSocket --> socket --> listenStream unix的listen函数用于将一个socket转换为监听socket。golang中同时结合了创建socket的步骤。 // src/net/tcpsock.gofunc ListenTCP(network string, laddr *TCPAddr) (*TCPListener, error) { switch network { //支持tcp协议为”tcp4“和“tcp6”，当使用"tcp"时可以通过地址格式进行判断 case "tcp", "tcp4", "tcp6": default: return nil, &OpError{Op: "listen", Net: network,

Update Java code during runtime

由 断了今生、忘了曾经 提交于 2019-11-30 03:23:34
问题 about a year ago I stumbled across a nice feature in Java that I cannot for the life of me find again. Through some magic interface it was apparently possible to declare some classes or functions replaceable during runtime. I found a nice example guide of someone who ran a simple little program that printed a certain message, he then updated the program using a method I cannot remember anymore and all of a sudden the program had replaced that old print function with a new one. I've tried

Understanding the “underlying C/C++ object has been deleted” error

由 血红的双手。 提交于 2019-11-30 02:20:22
It's not the first time I am getting the RuntimeError: underlying C/C++ object has been deleted . I've solved it many times altering my code in a random but intuitive way but now I am facing this again and just don't understand why it happens... What I ask for is a generic approach to confront and solve this error. I will not post code samples here because my project is too complex and I just can't figure out where's the bug. And also because I am asking for the universal solution not just for this case. Why can the 'underlying C/C++' objects be deleted? How to avoid it? How to test if the

Java设计模式：单例模式

由 微笑、不失礼 提交于 2019-11-30 00:24:44
单例模式是Java中最常用的模式之一。它用于控制通过阻止外部实例化和修改而创建的对象数。这个概念可以推广到只有一个对象存在时更有效地运行的系统，或者将实例化限制为一定数量的对象，例如： 私有构造函数 - 没有其他类可以实例化新对象。 私有引用 - 无需外部修改。 public static方法是唯一可以获取对象的地方。 单例的故事 这是一个简单的用例。一个国家只能有一位总统。因此，无论何时需要总统，都应该归还唯一的总统，而不是创建新总统。该 getPresident() 方法将确保始终只创建一个总统。 类图和代码 立即模式： public class AmericaPresident { private static final AmericaPresident thePresident = new AmericaPresident(); private AmericaPresident() {} public static AmericaPresident getPresident() { return thePresident; } } thePresident 声明为 final ，因此它将始终包含相同的对象引用。 懒惰模式： public class AmericaPresident { private static AmericaPresident

How to use Delphi Dlls without enabling Build with runtime packages

由 妖精的绣舞 提交于 2019-11-29 23:50:28
问题 Recently i started a project with so many forms , frames and extra controls, so my application was swelling up and i am using 3 exes in my projects(all made in Delphi 2009) and these applications are also sharing same frames and forms. so i used dlls to share these forms. but a problem came saying different Tfont error. so i refferd online and came with the answer saying to select | Build with runtime packages . then every thing started to work perfectly but when i checked the windows

GNUstep Objective-C Runtime 1.6 发布

由 坚强是说给别人听的谎言 提交于 2019-11-29 23:13:20
“继1.0版本发布之后一年多一点， 1.6版本的GNUstep Objective-C Runtime 与大家见面了。它提供了Apple's Mac OS X 10.7/iOS 5 runtimes 的一个超集，并为自由软件平台上Objective-C 和Objective-C 开发提供了坚实的基础。” 转载请注明： Linux人社区> 英文资讯翻译专版.编译 英文原文： GNUstep Objective-C Runtime 1.6 Released posted by Thom Holwerda on Fri 25th Nov 2011 22:48 UTC "A little over one year after the 1.0 release, I'm happy to announce the 1.6 release of the GNUstep Objective-C runtime . This provides a superset of the functionality of Apple's Mac OS X 10.7/iOS 5 runtimes and provides a solid foundation for Objective-C and Objective-C++ development on Free Software platforms."

iOS开发 runtime实现原理以及实际开发中的应用

由 扶醉桌前 提交于 2019-11-29 23:12:58
主要是这两个帖子 http://yulingtianxia.com/blog/2014/11/05/objective-c-runtime/ http://tech.glowing.com/cn/objective-c-runtime/ 然后，关于里面的代码实现有2个比较不错的博客，可以参考 http://blog.sunnyxx.com http://www.cnblogs.com/biosli/p/NSObject_inherit_2.html 另外还可以补充其他一些： // ----------------------------------- 刨根问底Objective－C Runtime --------------------- http://chun.tips/blog/2014/11/05/bao-gen-wen-di-objective%5Bnil%5Dc-runtime(1)%5Bnil%5D-self-and-super/ http://chun.tips/blog/2014/11/05/bao-gen-wen-di-objective%5Bnil%5Dc-runtime-(2)%5Bnil%5D-object-and-class-and-meta-class/ http://chun.tips/blog/2014/11/06/bao-gen-wen-di
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