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Scheduling recurring task in Android
...leep as soon as your onReceive() method completes. If your alarm receiver called Context.startService(), it is possible that the phone will sleep before the requested service is launched. To prevent this, your BroadcastReceiver and Service will need to implement a separate wake lock policy to ensure...
Android: AsyncTask vs Service
... accomplish the same task with either an AsyncTask or a Service however usually one is better suited to a task than the other.
AsyncTasks are designed for once-off time-consuming tasks that cannot be run of the UI thread. A common example is fetching/processing data when a button is pressed.
Servi...
MVC演化史 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...辑的处理。
Application Model MVC虽然看似解决了复杂逻辑的问题，但它仍然存在硬伤：
首先随着以微软视窗为主的图形化操作系统的兴起，操作系统本身提供了一套原生的View接口，用来截获用户通过鼠标或键盘发出的请求，结果...
Ternary operator is twice as slow as an if-else block?
...several additional registers available, and each register is 64-bits. This allows the X64 JIT to perform the inner loop entirely using registers aside from loading i from the array, while the X86 JIT places several stack operations (memory access) in the loop.
value is a 64-bit integer, which requir...
Is System.nanoTime() completely useless?
...cific counter. Now consider the following case I use to measure time of a call:
15 Answers
...
What is the strict aliasing rule?
...n(void)
{
// Get a 32-bit buffer from the system
uint32_t* buff = malloc(sizeof(Msg));
// Alias that buffer through message
Msg* msg = (Msg*)(buff);
// Send a bunch of messages
for (int i = 0; i < 10; ++i)
{
msg->a = i;
msg->b = i+1;...
防挂马：apache禁止访问文件或目录执行权限、禁止运行脚本PHP文件的设置方...
... </FilesMatch>
</Directory>
这些配置表面上看起来是没什么问题的，确实在windows下可以这么说。
但是Linux就不同了，大家都是知道的linux操作系统是区分大小写的，这里如果换成大写后缀名*.phP一类就pass了
这里我说下我个人的解...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
...能够搞得定的，加油~如果在编译或开发过程中遇到任何问题，欢迎发帖讨论。
谢谢分享谢谢分享谢谢分享
Why is an int in OCaml only 31 bits?
...
This is called a tagged pointer representation, and is a pretty common optimization trick used in many different interpreters, VMs and runtime systems for decades. Pretty much every Lisp implementation uses them, many Smalltalk VMs, m...
How do I specify the platform for MSBuild?
...ution must be configured for both platforms. Actually you just have an Any CPU configuration.
How to check the available configuration for a project
To check the available configuration for a given project, open the project file (*.csproj for example) and look for a PropertyGroup with the right Co...