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Keep-alive header clarification
... is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.
HTTP works with request-response: client connects to server, performs a request and gets a response. Without keep-alive, the c...
How to round up the result of integer division?
...ause it only uses it once, you don't need to store the recordsPerPage specially if it comes from an expensive function to fetch the value from a config file or something.
I.e. this might be inefficient, if config.fetch_value used a database lookup or something:
int pageCount = (records + config.f...
Discuz 证件类型下拉框不显示的解决方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...拉框是不是出来了？是不是很神奇？ 前台程序代码没得问题的，放心使用！
找到文件 \source\admincp\admincp_members.php ，搜索代码共两处：
C::t('common_member_profile_setting')->update('idcardtype', $setarr);
改为：
C::t('common_member_profile_set...
Copy all the lines to clipboard
Is there any way to copy all lines from open file to clipboard in VI editor. I tried y G but it's not using clipboard to store those lines.
...
Error deploying ClickOnce application - Reference in the manifest does not match the identity of the
I'm trying to deploy a ClickOnce application, but installation fails on the client. Here's the error log:
20 Answers
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log all queries that mongoose fire in the application
...using nodejs and mongodb. I have used mongoose for ODM.
Now i want to log all the queries that mongoose fire during the whole application.
...
How to delete a specific line in a file?
...
First, open the file and get all your lines from the file. Then reopen the file in write mode and write your lines back, except for the line you want to delete:
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w"...
Create numpy matrix filled with NaNs
...r operations in numpy.
You can create an uninitialized array and assign to all entries at once:
>>> a = numpy.empty((3,3,))
>>> a[:] = numpy.nan
>>> a
array([[ NaN, NaN, NaN],
[ NaN, NaN, NaN],
[ NaN, NaN, NaN]])
I have timed the alternatives a[:] ...
App Inventor 2 ECharts 拓展：基于 ECharts 强大的个性化数据图表展示 · ...
...不需要回复的可留空~ 请描述您的问题（300字以内）： 给个鼓励也行呐~o~ 提供截图（仅截取当前可视区域...
Java 8 Streams: multiple filters vs. complex condition
...t reliably. The underlying object structure might differ but that’s no challenge to the hotspot optimizer. So it depends on other surrounding conditions which will yield to a faster execution, if there is any difference.
Combining two filter instances creates more objects and hence more delegatin...