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C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...p的偏移之所以是0x8而不是0x6，是因为内存对齐了（我在64位系统上）。关于内存对齐，可参看《深入理解C语言》一文。好了，现在你知道为什么原题中会访问到了0x4的地址了吧，因为是相对地址。相对地址有很好多处，其可以...
Most lightweight way to create a random string and a random hexadecimal number
...me t1 and t2 as above:
>>> t1 = timeit.Timer("''.join(random.choice('0123456789abcdef') for n in xrange(30))", "import random")
>>> t2 = timeit.Timer("binascii.b2a_hex(os.urandom(15))", "import os, binascii")
>>> t3 = timeit.Timer("'%030x' % random.randrange(16**30)", "im...
TortoiseSVN允许修改日志的方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
TortoiseSVN允许修改日志的方法SVN默认是不允许修改日志的，否则报错：可以通过服务端的hooks目录下的批处理使得SVN日志可修改。Windows版：服务器端svn仓库hooks目录下加...SVN默认是不允许修改日志的，否则报错：
可以通过服务...
linux下修改默认MYSQL的root管理密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
linux下修改默认MYSQL的root管理密码2、例子例1：给root加个密码123456。键入以下命令 ：[root@test1 local]# usr bin mysqladmin -u root password123456注：因为开始...例1：给root加个密码123456。
键入以下命令 ：
[root@test1 local]# /usr/bin/mysqladmin -u ro...
Linux修改主机名（不过需谨慎！） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
Linux修改主机名（不过需谨慎！）linux_modify_hostname1、Linux修改主机名的方法：hostnamectl 查看现在的主机名，等同于命令 hostnamectl statushostnamectl set-hostname <修改之后的主机名>这样就ok了，主机名就改成新
1、Linux修改主机名的...
将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...明如何把Linux代码移植到Windows平台上。移植过程将尽量少修改代码,以便代码的运行逻辑不会发生任何变动。保留绝大部分软件主要功能。
二．准备工作
Tar是Linux平台下面一个打包工具。移植这样一个程序到windows平台需要做那...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...swered Apr 23 '10 at 18:57
bobincebobince
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JavaScript + Unicode regexes
...r expressions into equivalent ES5. It can be used as part of your build process. Try it out online.
Situation for ES 5 and below
Even though JavaScript operates on Unicode strings, it does not implement Unicode-aware character classes and has no concept of POSIX character classes or Unicode blocks/s...
boost::flat_map and its performance compared to map and unordered_map
... is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able to...
Way to get all alphabetic chars in an array in PHP?
...> BZ [78] => CA [79] => CB [80] => CC [81] => CD [82] => CE [83] => CF [84] => CG [85] => CH [86] => CI [87] => CJ [88] => CK [89] => CL [90] => CM [91] => CN [92] => CO [93] => CP [94] => CQ [95] => CR [96] => CS [97] => CT [98] => C...