runtime

Android determine screen orientation at runtime

风流意气都作罢 提交于 2019-12-02 18:12:48
Here's a pseudo code to detect screen rotate event, and decide to retain or changes the screen orientation. public boolean onOrientationChanges(orientation) { if(orientation == landscape) if(settings.get("lock_orientation")) return false; // Retain portrait mode else return true; // change to landscape mode return true; } How do I make similar things in Android? EDIT: I'm actually looking answer on Where to handle orientation changes . I do not want to fix the orientation by adding screenOrientation="portrait". I need something, similar to onConfigurationChanges(), where I can handle the

Big O notation of a constant

孤街浪徒 提交于 2019-12-02 18:07:00
问题 I calculate my runtime complexity to be 4 , what is the Big O notation of this? For example if my runtime complexity is 4 + n then its Big O = O(n) . 回答1: Let's look loosely at the definition of what we mean by f(n) is in O(g(n)) : f(n) is in O(g(n)) means that c · g(n) is an upper bound on f(n) . Thus there exists some constant c such that f(n) ≤ c · g(n) holds for sufficiently large n (i.e. , n ≥ n0 for some constant n0 ). You can treat a constant function just as any other function, w.r.t.

Lowering build size

左心房为你撑大大i 提交于 2019-12-02 17:52:53
问题 Is there any way I can lower my build size when I am using static linking for the C++ runtime libraries in VS2013? My original file was just 15kb, but I couldn't run it on my other computers without a missing .dll message popping up. I decided to use static linking and now the size is ~100kb. I am using the Windows.h header and WinAPI functions. 回答1: If you're only going to display a MessageBox, you don't need to link to any static libraries. #include <windows.h> void entry(void) { MessageBox

Vue系列---源码构建过程(四)

穿精又带淫゛_ 提交于 2019-12-02 17:47:37
在了解源码如何构建之前,我们有必要了解下 项目中一个简单的目录结构如下: |---- vue | |---- dist # 打包后的存放文件目录 | |---- scripts # 存放构建相关的代码 | | |--- alias.js | | |--- build.js | | |--- config.js # 配置文件 | | |--- ..... 其他的更多 | |---- src # src目录是vue核心代码库 | | |--- compiler | | |--- core | | |--- platforms | | | |--- web # web平台 | | | | |--- compiler | | | | |--- runtime | | | | |--- server | | | | |--- util | | | | |--- entry-runtime-with-compiler.js # 运行+模板编译的入口文件 | | | |--- weex | | |--- server | | |--- sfc | | |--- shared | |---- package.json 如上只是一个非常简单的一个目录,为了节约篇幅,只是把入口构建的相关的目录画出来。 我们看任何库相关的代码的第一步先把视线转移到 package.json 中来。然后看下

Load a class using reflection then edit the variables during runtime

隐身守侯 提交于 2019-12-02 17:12:45
问题 Okay, so I have a java file which is loading another class and I want the java file to be able to edit and read variables from the class which is running. For example: I have a button which when pressed it sets a variable (This is the class file). I want the java file which is loading this class to be able to see the new value of the variable read it, set it and do whatever is needed. And I want the new value which is set to show up on the running java class. This is what I have tried so far

java runtime.getRuntime.exec( cmd ) with long parameters

倖福魔咒の 提交于 2019-12-02 17:07:30
问题 I'm making a frontend for a command line app. It has a very long The command line is something simliar to this: public String liveShellCommand(){ String cmd="command mode --parameter arg --parameter2 arg2 --parameter3 arg3"; Runtime run = Runtime.getRuntime() ; Process pr ; try { log.progress("sending command: " +cmd); pr = run.exec( cmd ); pr.waitFor() ; Everything seems to work until I add the "mode" switch into it. The "mode" switch executes from the command line. I've tried a few

Implementation of simple Java IDE using Runtime Process and JTextArea

不羁岁月 提交于 2019-12-02 17:02:12
问题 I am developing a simple Java IDE like Netbeans/Eclipse. My GUI includes two JTextArea component, one used as a TextEditor where the end user can type in his programs and the other used as an output window. I am running the users programs by invoking the windows command prompt through Java Runtime and Process classes. I am also catching the IO streams of the process using the methods getInputStream(), getErrorStream(), getOutputStream(). If the program contains only the statements to print

What are the most commonly used runtime exceptions in java? [closed]

心已入冬 提交于 2019-12-02 16:59:33
As a java programmer who wishes to perfect his programming skills, I often come across the situations that I have to create a runtime exception. I know it's a good practice if one use wisely. Personally, NullPointerException and IllegalStateException are the most commonly used in the softwares that I have created. How about you? What runtime exceptions do you often use? In what situations do you use them? KLE I never throw NullPointerException . For me, it is one that appears naturally in the code when something goes wrong and that requires a developer to look at what happens. Then (s)he fixes

thinkphp自动创建目录

会有一股神秘感。 提交于 2019-12-02 16:11:27
自动创建目录 在第一次访问应用入口文件的时候,会显示如图所示的默认的欢迎页面,并自动生成了一个默认的应用模块Home。 接下来再看原来空的 Application 目录下面,已经自动生成了公共模块 Common 、默认的 Home 模块和 Runtime 运行时目录的目录结构: Application ├─ Common 应用公共模块 │ ├─ Common 应用公共函数目录 │ └─ Conf 应用公共配置文件目录 ├─ Home 默认生成的 Home 模块 │ ├─ Conf 模块配置文件目录 │ ├─ Common 模块函数公共目录 │ ├─ Controller 模块控制器目录 │ ├─ Model 模块模型目录 │ └─ View 模块视图文件目录 ├─ Runtime 运行时目录 │ ├─ Cache 模版缓存目录 │ ├─ Data 数据目录 │ ├─ Logs 日志目录 │ └─ Temp 缓存目录 如果你不是Windows环境下面的话,需要对应用目录 Application 设置可写权限才能自动生成。 如果不是调试模式的话,会在Runtime目录下面生成 common~runtime.php 文件(应用编译缓存文件)。 目录安全文件 在自动生成目录结构的同时,在各个目录下面我们还看到了index.html文件,这是ThinkPHP自动生成的目录安全文件。

[Vue warn]: You are using the runtime-only build of Vue where the template compiler is not available

痞子三分冷 提交于 2019-12-02 15:59:49
相信很多初学者使用vue-cli2.x初始化脚手架项目的时候或者webpack配置的时候会遇到这个问题: 一开始初始化项目配置的时候,有两个运行环境配置的版本:Compiler版本、Runtime版本。 简单说一下这两个版本的区别: 当对template模板内容编译是需要对字符串进行模板渲染或者可以绑定的html对象作为模板进行渲染的方式,就需要使用Compiler版本。示例如下: new Vue ( { el : '#vue-app' , template: '<div><h1>{{test}}</h1></div>' , data:{ test: 'hello' } }); 如果使用vue-loader加载.vue文件时(组件文件),webpack在打包对模板进行了渲染,就需要Runtime版本。示例如下: new Vue({ el: '#app' , components: { App }, template: '<App/>' }) 从Compiler版本修改为Runtime版本。只需如示代码: 添加一行代码: 'vue$': 'vue/dist/vue.esm.js', ,然后重新运行编译就可以了 来源: CSDN 作者: 猿来独往 链接: https://blog.csdn.net/qq_35324453/article/details/80920344