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to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
...you had to animate a ball moving across the screen, it would be a terrible idea to call setNeedsDisplay on a view 60 times per second. So, if you have sub-components of your view that need to be individually animated, each component should be a separate layer.
The other problem is that when you don...
Perl build, unit testing, code coverage: A complete working example
...CPAN modules because that's where the full documentation is supposed to reside. I've had trouble finding complete working code examples in many cases, though.
...
Why does Python code run faster in a function?
... (LOAD_GLOBAL), which is a true dict search involving a hash and so on. Incidentally, this is why you need to specify global i if you want it to be global: if you ever assign to a variable inside a scope, the compiler will issue STORE_FASTs for its access unless you tell it not to.
By the way, glob...
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...
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...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...ey made JSF managed beans and another container for JSF beans and they considered it a mature DI container, but still it was not complete and mature container.
After that Gavin King and some other nice guys ;) made CDI which is the most mature DI container I've seen. CDI (inspired by Seam2, Guice a...
When exactly is it leak safe to use (anonymous) inner classes?
I have been reading some articles on memory leaks in Android and watched this interesting video from Google I/O on the subject .
...
Best practices/guidance for maintaining assembly version numbers
...ome up with an easy to use versioning system. From what you have already said in your question it is clear that you have understood one important point, the assembly version numbers are not synonymous with the product version. One is technically driven, and the other is driven by the business.
The ...
UnicodeDecodeError when redirecting to file
...to the ubiquitous UTF-8, but this is incorrect terminology, as Unicode provides multiple encodings).
In summary, computers need to internally represent characters with bytes, and they do so through two operations:
Encoding: characters → bytes
Decoding: bytes → characters
Some encodings canno...