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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
I understand the basics of how ports work. However, what I don't get is how multiple clients can simultaneously connect to say port 80. I know each client has a unique (for their machine) port. Does the server reply back from an available port to the client, and simply state the reply came from 80? ...
What is a reasonable code coverage % for unit tests (and why)? [closed]
If you were to mandate a minimum percentage code-coverage for unit tests, perhaps even as a requirement for committing to a repository, what would it be?
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How do I properly clean up Excel interop objects?
I'm using the Excel interop in C# ( ApplicationClass ) and have placed the following code in my finally clause:
41 Answers
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Releasing memory in Python
I have a few related questions regarding memory usage in the following example.
4 Answers
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In plain English, what does “git reset” do?
I have seen interesting posts explaining subtleties about git reset .
7 Answers
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How do I use vimdiff to resolve a git merge conflict?
I just merged a branch into my master in git and I got Automatic merge failed; fix conflicts and then commit the result. Now I ran git mergetool and vimdiff opened with the image below. I don't know how to use vimdiff. What does each panel here mean and how should I proceed to fix the merge conf...
Why is volatile not considered useful in multithreaded C or C++ programming?
As demonstrated in this answer I recently posted, I seem to be confused about the utility (or lack thereof) of volatile in multi-threaded programming contexts.
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Where do you store your salt strings?
I've always used a proper per-entry salt string when hashing passwords for database storage. For my needs, storing the salt in the DB next to the hashed password has always worked fine.
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社交应用组件 · App Inventor 2 中文网
...体
设置联系人选择框的字体，目前支持的字体有：default, serif, sans serif, 和 monospace。
要使用自定义字体，请将 .ttf 字体文件上传并选中它。
高度
设置联系人选择框的垂直高度，以像素px为单位。
高度百分比
设...