runtime

Swift Objective-C runtime class naming

梦想与她 提交于 2019-12-06 10:50:26
I've noticed that a Swift Class is renamed in objective-c runtime. So if I had a class in swift named ViewController and the name of my app was TestRuntime when I perform object_getClass(self) , self being ViewController , I would get this: _TtC11TestRuntime14ViewController . I've noticed this pattern or format: _TtC$$AppName$$ClassName , $ being a random number. I can't figure out where these numbers are coming from. If someone could shed some light on how swift names its classes in the runtime that would really help me. They're not random. They're the length of the following value. This is

Objective-C add an NSButton to my iphone app at runtime

£可爱£侵袭症+ 提交于 2019-12-06 10:38:10
I am absolutely clueless on this front! Step-by-step explanation earns bonus points. In iOS We have UIButtons (not NSButtons) Here is how to create an UIButton programmatically: UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; //3 [button setFrame:CGRectMake(320, 0, 100,100 )]; [button setTitle:@"PressMe!" forState:UIControlStateNormal]; [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];//2 [aView addSubview:button]; //1 and : - (void)buttonPressed:(UIButton *)sender{ //do something here ;) [sender setTitle:@"PressMe!.

How to generate processes with inherited rights and permissions

我的梦境 提交于 2019-12-06 10:38:08
Is there any way to make a process with all inherited rights of the process, i already own. For example i have some process; Process superUserShell = Runtime.getRuntime().exec("su"); and i am able to get output stream and execute commands like this DataOutputStream outputStream = new DataOutputStream(superUserShell.getOutputStream()); // for example outputStream.writeBytes("rm -rf /*"); outputStream.flush(); but i have no posobilities to handle results of executed commands, so what i really wana is to have separated Processes generated by another Process(for example by " superUserShell ") Any

Get height for RecyclerView child views at runtime

匆匆过客 提交于 2019-12-06 10:06:44
问题 I'm trying to make an expandable TextView that expands/collapses when a user presses a button. The TextView and ImageButton are in a CardView, which is added to a RecyclerView. The expand/collapse work nicely, but now I want to add the ImageButton only when the TextView height exceeds a certain maximum height. But when I evaluate the height in the LayoutManager's addView method, it returns 0, probably because the TextView does not have any text yet. Is there any callback method that I can

Type Target runtime Apache Tomcat v8.0 is not defined.

ぐ巨炮叔叔 提交于 2019-12-06 09:54:54
问题描述:当我们使用eclipse导入别人的java项目时,build path后能正常运行,但还会报一个错误 解决方法:【项目】->【右键】->【Properties】->【Targeted-Runtimes】 把你的tomcat打勾 然后 保存 错误就消失了: 来源: https://www.cnblogs.com/wangrui-liyin/p/11975380.html

generic class, how to set the type in runtime?

元气小坏坏 提交于 2019-12-06 08:54:17
问题 I have created a generic class, but I know the type in runtime, not in design, so I would like to know how to set the type in runtime. For example, I have: public class MyGenericClass<T> { .... } Then I try to use it. I have a method in other class, that consume this generic class. In the constructor of this class, I receive as parameter the type that I want, so I have a type property in which I save the type that I need. So I am trying this: MyGenericClass<_typeNeeded> myClass = new

树莓派4安装net core3.0环境

北慕城南 提交于 2019-12-06 08:42:31
树莓派4官方系统是32系统,所以需要安装arm32版本的net core sk和runtime 1,首先创建一个文件夹 dotnet-arm32 sudo mkdir dotnet arm32 2,下载sdk和runtime wget https://download.visualstudio.microsoft.com/download/pr/0b30374c-3d52-45ad-b4e5-9a39d0bf5bf0/deb17f7b32968b3a2186650711456152/dotnet-sdk-3.0.101-linux-arm.tar.gz wget https://download.visualstudio.microsoft.com/download/pr/57bf6ac3-1712-4b36-bfab-80b31d7ce21e/1ca71849902d73eb083bcc2c2f4d8f4f/aspnetcore-runtime-3.0.1-linux-arm.tar.gz 3,将sdk和runtime解压到dotnet-arm32文件夹中 tar zxf aspnetcore-runtime-3.0.1-linux-arm.tar.gz -C $HOME/dotnet tar zxf dotnet-sdk-3.0.101-linux-arm.tar.gz -C

Instrumentation (diagnostic) library for C++

半腔热情 提交于 2019-12-06 08:08:57
问题 I'm thinking about adding code to my application that would gather diagnostic information for later examination. Is there any C++ library created for such purpose? What I'm trying to do is similar to profiling, but it's not the same, because gathered data will be used more for debugging than profiling. EDIT: Platform: Linux Diagnostic information to gather: information resulting from application logic, various asserts and statistics. 回答1: You might also want to check out libcwd: Libcwd is a

Runtime Exception unable to start MainActivity

一世执手 提交于 2019-12-06 08:02:28
I'm trying to test my Android app on a new phone I've just purchased with Android 4.2. It runs every other app I test, and this particular app also works on other devices. When I try to run the code it's giving me the following errors: > 02-23 12:15:08.532: E/AndroidRuntime(5431): FATAL EXCEPTION: main 02-23 12:15:08.532: E/AndroidRuntime(5431): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.antiquity/com.example.antiquity.MainActivity}: java.lang.NullPointerException 02-23 12:15:08.532: E/AndroidRuntime(5431): at android.app.ActivityThread.performLaunchActivity

boost 1.56.0 编译及使用

岁酱吖の 提交于 2019-12-06 08:01:19
boost的编译和使用,经过搜集资料和总结,记录成文。感谢文后所列参考资料的作者。 1 下载 地址:http://sourceforge.net/projects/boost/files/boost/1.56.0/ 可以选择 boost_1_56_0.7z 下载。 2 编译 2.1 生成boost的自用的编译工具bjam.exe 解压后,使用VS2013编译。首先打开“VS2013 开发人员命令提示”,cd 到boost 解压后 的根目录: E:\XXX\boost_1_56_0,执行 bootstrap.bat。会在boost根目录生成 b2.exe 、bjam.exe 、project-config.jam 、bootstrap.log四个文件。 其中,b2.exe 、bjam.exe 这两个exe作用是一样的,bjam.exe 是老版本,b2是bjam的升级版本。 2.2 使用bjam(或b2)来编译boost 1. bjam命令参数分析 我们以文章【1】中的命令来分析一下各个参数的作用(原作者解压后的boost根目录为 E:\SDK\boost )。 bjam stage --toolset=msvc-9.0 --without-python --stagedir="E:\SDK\boost\bin\vc9" link=static runtime-link=shared