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OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...easy_list_for_each_entry_safe：
#define easy_list_for_each_entry_safe(pos, n, head, member) \
for (pos = easy_list_entry((head)->next, typeof(*pos), member), \
n = easy_list_e...
Sockets: Discover port availability using Java
...ecking the DatagramSocket as well to check if the port is avaliable in UDP and TCP.
Hope this helps.
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?
...bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install package from http://www.python.org/ . What directories/files/configuration file entries do I need to remove? Is there a list somewhere?
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C++ compiling on Windows and Linux: ifdef switch [duplicate]
I want to run some c++ code on Linux and Windows. There are some pieces of code that I want to include only for one operating system and not the other. Is there a standard #ifdef that once can use?
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How can I check the extension of a file?
...swith('.mp3'):
...
elif m.endswith('.flac'):
...
To be case-insensitive, and to eliminate a potentially large else-if chain:
m.lower().endswith(('.png', '.jpg', '.jpeg'))
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Running V8 Javascript Engine Standalone
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V8 is easy to build and does not come with the Java VM overhead from Mozilla's standalone Javascript interpreter. Luckily, V8 ships with code for building a console. Here is how to build this:
$> svn co http://v8.googlecode.com/svn/trunk v8...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
I know about the HIG (which is quite handy!), but what programming practices do you use when writing Objective-C, and more specifically when using Cocoa (or CocoaTouch).
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How do I check OS with a preprocessor directive?
...them, with links to where they're found:
Windows
_WIN32 Both 32 bit and 64 bit
_WIN64 64 bit only
Unix (Linux, *BSD, Mac OS X)
See this related question on some of the pitfalls of using this check.
unix
__unix
__unix__
Mac OS X
__APPLE__
__MACH__
Both are defined; checking for eith...
Python module os.chmod(file, 664) does not change the permission to rw-rw-r— but -w--wx----
...zero is important, it's because
permissions are set as an octal integer, and Python automagically
treats any integer with a leading zero as octal. So os.chmod("file",
484) (in decimal) would give the same result.
What you are doing is passing 664 which in octal is 1230
In your case you woul...
Setting environment variables on OS X
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Bruno is right on track. I've done extensive research and if you want to set variables that are available in all GUI applications, your only option is /etc/launchd.conf.
Please note that environment.plist does not work for applications launched via Spotlight. This is documented...