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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...0 70628 0 0 115 4 89 79 1 6 90 3 0
3. lsof — 打开文件列表
lsof 命令对于很多 Linux/Unix 系统都可以使用，主要以列表的形式显示打开的文件和进程。
打开的文件主要包括磁盘文件、网络套接字、管道、设备和进程。使用...
Hash and salt passwords in C#
...xample in the question. You can convert text to byte arrays using Encoding.UTF8.GetBytes(string). If you must convert a hash to its string representation you can use Convert.ToBase64String and Convert.FromBase64String to convert it back.
You should note that you cannot use the equality operator on ...
Code for decoding/encoding a modified base64 URL
...atic string Base64ForUrlEncode(string str)
{
byte[] encbuff = Encoding.UTF8.GetBytes(str);
return HttpServerUtility.UrlTokenEncode(encbuff);
}
///<summary>
/// Decode Base64 encoded string with URL and Filename Safe Alphabet using UTF-8.
///</summary>
///<param name="str">B...
Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
...s
new file: DbConnector
首先应当注意到新的 .gitmodules 文件。 该配置文件保存了项目 URL 与已经拉取的本地目录之间的映射：
[submodule "DbConnector"]
path = DbConnector
url = https://github.com/chaconinc/DbConnector
如果有多个子...
What is the best scripting language to embed in a C# desktop application? [closed]
... expose our object model to a scripting langauge. Time was when that meant VBA (which is still an option), but the managed code derivative VSTA (I think) seems to have withered on the vine.
...
Android应用内存泄露分析、改善经验总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... }
}
}
}
IO操作后，没有关闭文件导致的内存泄露，比如Cursor、FileInputStream、FileOutputStream使用完后没有关闭，这种问题在Android Studio 2.0中能够通过静态代码分析检查出来，直接改善就可以了；
自...
MySQL error: key specification without a key length
...aracters for a single-byte charset like LATIN1 and only 255 characters for UTF8 (MySQL only uses BMP which requires at most 3 bytes per character)
If you need your whole column to be the PRIMARY KEY, calculate SHA1 or MD5 hash and use it as a PRIMARY KEY.
...
libevent对比libev的基准测试 - C/C++ - 清泛网 - 专注C/C++及内核技术
...它使用红黑树来组织计时器和其他类型的双向链表。每个文件描述符或信号最多可以有一个读取和一个写入观察者。它还提供了一个简单的 DNS 解析器和服务器以及 HTTP 服务器和客户端代码，以及一个套接字缓冲抽象。
Libev 概...
A better similarity ranking algorithm for variable length strings
...s discussion has been really helpful, thanks. I converted the algorithm to VBA for use with Excel and wrote a few versions of a worksheet function, one for simple comparison of a pair of strings, the other for comparing one string to a
Changing the maximum length of a varchar column?
...le` CHANGE `property` `property`
VARCHAR(whatever_you_want) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL;
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