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What's the best way to send a signal to all members of a process group?
...ving it a process number, give it the negation of the group number. For example to kill every process in group 5112, use kill -TERM -- -5112.
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Python Infinity - Any caveats?
...involving inf:
>>> 0 * float("inf")
nan
Note that you will normally not get an inf value through usual arithmetic calculations:
>>> 2.0**2
4.0
>>> _**2
16.0
>>> _**2
256.0
>>> _**2
65536.0
>>> _**2
4294967296.0
>>> _**2
1.84467440737...
How to convert an enum type variable to a string?
...ntation is taken from:
// http://lists.boost.org/boost-users/2012/09/76055.php
//
// This macro do the following:
// input:
// (Element1, "Element 1 string repr", 2) (Element2) (Element3, "Element 3 string repr")
// output:
// ((Element1, "Element 1 string repr", 2)) ((Element2)) ((Element...
How to get the process ID to kill a nohup process?
...ng nohup and you put the task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process if needed, via kill PID or kill -9 PID (if you need to force kill)....
What is Bit Masking?
...n someone explain to me the general concept and function of bit masking? Examples are much appreciated.
2 Answers
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C++: what regex library should I use? [closed]
...+11 - Do the tutorial: http://www.codeguru.com/cpp/cpp/cpp_mfc/stl/article.php/c15339
Note:
At the time of writing the only c++11 regex library that I know works is the clang/llvm one, and only works on Mac. The GNU still doesn't implement regex yet. I don't know about Visual Studio. Most people st...
Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...技术细节，其中演示代码如果没有特殊说明，使用的都是PhpRedis扩展来实现的。内...最近忙着用Redis实现一个消息通知系统，今天大概总结了一下技术细节，其中演示代码如果没有特殊说明，使用的都是PhpRedis扩展来实现的。
内...
How to generate JAXB classes from XSD?
...ncluded in the bin directory in the JDK starting with Java SE 6. For an example see:
http://blog.bdoughan.com/2010/09/processing-atom-feeds-with-jaxb.html
The contents of the blog are the following:
Processing Atom Feeds with JAXB
Atom is an XML format for representing web feeds. A standard f...
How do Trigonometric functions work?
...se to improve accuracy.
There are some refinements to the above. For example, for very small angles theta (in radians), sin(theta) = theta to all the precision you have, so it's more efficient to simply return theta than to use some other algorithm. So in practice there is a lot of special case...
C state-machine design [closed]
... can still see some of the content on state-machine.com/resources/articles.php, but even there most of the state machine-related links are dead. This is one of the only good links there: state-machine.com/resources/…
– Tatiana Racheva
Jan 25 '14 at 19:12
...