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婚庆O2O：领跑的企业也就只走到B轮 - 资讯 - 清泛网 - 专注C/C++及内核技术
...？我给你介绍个对象吧！啥时候结婚呐？年薪多少买房了吗？你看隔壁小王都有俩娃了，ba la ba la
俩娃你M。彷徨着彷徨着，春节的脚步近了，七大姑八大姨的脚步也近了，单身的别慌、未婚也别紧张，不就是结婚这点破事儿嘛...
计时器组件能不能在手机黑屏时继续工作？ - App Inventor 2 中文网 - 清泛I...
有用户提问，计时器组件能不能在手机黑屏时继续工作？
其实，计时器组件有一个属性“一直计时”，默认是勾选的，开启一直计时的话，就能在App后台或者黑屏时继续触发计时事件。
通过简单的demo就能快速验证：
...
Linux: compute a single hash for a given folder & contents?
... non standard file names
How to proceed with files that are sockets, pipes/FIFOs, block devices, char devices? Must hash them as well?
Don't update the access time of any entry while traversing because this will be a side effect and counter-productive(intuitive?) for certain use cases.
This is wh...
C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
... performance and correctness of SC. For example, in certain architectures, FIFO write buffers are used by each core to hold the results of committed (retired) stores before writing the results to the caches. This optimization enhances performance but violates SC. The write buffer hides the latency o...
App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...寻找一个空闲端口进行内部发送。
当然，每个块都可以覆盖所有设计器属性。
属性/参数
发送消息需要三个细节：目标地址、发送者地址和消息本身。网络地址由两个部分组成：IP（地址）和端口（编号）。...
Synchronization vs Lock
...
The main difference is fairness, in other words are requests handled FIFO or can there be barging? Method level synchronization ensures fair or FIFO allocation of the lock. Using
synchronized(foo) {
}
or
lock.acquire(); .....lock.release();
does not assure fairness.
If you have lots ...
AppInventor2关闭屏幕时，如何让计时器继续工作？ - App应用开发 - 清泛IT...
转：AppInventor2关闭屏幕时，如何让计时器继续工作？
这是一个很好的问题，通过查看文档可以看到有一个“一直计时”属性，默认是勾选的：
这个属性就是用来控制App后台运行/屏幕关闭时，计时器是否继续工作的。
经...
How can you diff two pipelines in Bash?
...diff to read one input from STDIN, and use the named pipe as the other:
mkfifo file1_pipe.txt
foo|bar > file1_pipe.txt && baz | quux | diff file1_pipe.txt - && rm file1_pipe.txt
Note that you can only pipe one output to multiple inputs with the tee command:
ls *.txt | tee /d...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...通用户不能登录。回想起来，把原始OPENSSH5.3的配置文件覆盖到本机的配置文件 sshd_config . 覆盖完成，登录正常
以下是配置文件的内容，以免忘记，先拷贝出来吧
# $OpenBSD: sshd_config,v 1.93 2014/01/10 05:59:19 djm Exp $
# Thi...
How to make an array of arrays in Java
...ions for different functionality (index-based lookup, sorting, uniqueness, FIFO-access, concurrency etc.).
While it's of course good and important to know about Arrays and their usage, in most cases using Collections makes APIs a lot more manageable (which is why new libraries like Google Guava har...