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WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...个窗口句柄, 套接字的通知消息将被发到此窗口中
u_int wMsg, //网络事件到来的ID,可以在WM_USER以上数值中任意指定一个值
long IEvent //指定哪些通知码需要发送
//FD_READ可以读套接字
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Linux下追踪程序退出(崩溃)思路 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...令
-w 把缓存中的历史命令写入历史命令保存文件~/.bash_history,每个用户文件下都有一个历史命令的保存文件,相互之间不会冲突。直接用history看到的历史命令是要比.bash_history文件中的历史命令多一些的,因为我们登录之后新...
When to use pip requirements file versus install_requires in setup.py?
I'm using pip with virtualenv to package and install some Python libraries.
4 Answers
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What is the HEAD in git?
...ce to the last commit in the currently checked-out branch.
There is a small exception to this, which is the detached HEAD. A detached HEAD is the situation you end up in whenever you check out a commit (or tag) instead of a branch. In this case, you have to imagine this as a temporary branch with...
Is there YAML syntax for sharing part of a list or map?
... what you want. It uses a special << mapping key to indicate merges, allowing an alias to a mapping (or a sequence of such aliases) to be used as an initializer to merge into a single mapping. Additionally, you can still explicitly override values, or add more that weren't present in the merge...
MySQL Results as comma separated list
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The intent is fine and MySQL will allow this, but be careful (generally) with your use of GROUP BY. The items in the select list need to be valid aggregates in the context of the GROUP BY clause. In this case, p.name is not strictly valid. Any database con...
Python - Create a list with initial capacity
...bject %d" % ( i, )
result.append(message)
return result
def doAllocate( size=10000 ):
result=size*[None]
for i in range(size):
message= "some unique object %d" % ( i, )
result[i]= message
return result
Results. (evaluate each function 144 times and average ...
Truncating all tables in a Postgres database
I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL?
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Why would you use an ivar?
I usually see this question asked the other way, such as Must every ivar be a property? (and I like bbum's answer to this Q).
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Where is Python's sys.path initialized from?
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"Initialized from the environment variable PYTHONPATH, plus an installation-dependent default"
-- http://docs.python.org/library/sys.html#sys.path
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