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Can I initialize a C# attribute with an array or other variable number of arguments?
...mple from a row test in our unit tests that tests a variable number of command line options;
[Row( new[] { "-l", "/port:13102", "-lfsw" } )]
public void MyTest( string[] args ) { //... }
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Why do I need 'b' to encode a string with Base64?
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base64 encoding takes 8-bit binary byte data and encodes it uses only the characters A-Z, a-z, 0-9, +, /* so it can be transmitted over channels that do not preserve all 8-bits of data, such as email.
Hence, it wants a string of 8-bit bytes. You create those in Python ...
Is null reference possible?
Is this piece of code valid (and defined behavior)?
4 Answers
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App Inventor 2 与 Mixly（米思齐）MixIO 平台数据通信方案完整调研 - 创客...
...注意不是登录密码，是项目凭证密码） - Client ID / 项目名：MixIO 工程名3. 使用 MQTT Publish 积木向指定主题发送数据4. 使用 MQTT Subscribe 积木订阅主题，实时接收硬件端数据数据流示意：AI2 App --MQTT Publish--> MixIO Broker --MQTT...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...bunch of mutexes or a single one for an object.
If you have many threads and the access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking.
How efficient is it to lock a mutex? I.e....
思维导图软件 XMind 与 FreeMind 的对比 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...本身。即，.mm是纯文本的xml，包括 FreeMind 的图标也是以ID数字标示。
XMind：支持上述链接方式，也支持（默认）把该文档及图片引入XMind文件作为附件，形成完整的资料包。 .xmind 格式与OOo文档一样，实质是 xml＋素材 的zip包。...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 18:27 pts/1 00:00:00 grep zebra
[root@RS1 ~]# lsof -i:2601
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
zebra 3919 root 10u IPv4 19685 0t0 TCP *:discp-client (LISTEN)
[root@RS1 ~]#
*:discp-client (LISTEN)
zebra-0.95a安装好后会自动往系统/etc/servics...
Performance optimization strategies of last resort [closed]
...ite already, but it occurs to me that almost all are very problem-specific and fairly narrow. And almost all repeat the advice to avoid premature optimization.
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Multiprocessing - Pipe vs Queue
What are the fundamental differences between queues and pipes in Python's multiprocessing package ?
2 Answers
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How do you validate a URL with a regular expression in Python?
I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
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