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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...放内存。当然,智能指针还不止这些,还包括复制时可以修改源对象等。智能指针根据需求不同,设计也不同(写时复制,赋值即释放对象拥有权限、引用计数等,控制权转移等)。auto_ptr 即是一种常见的智能指针。 智能...
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【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... rem 是相对于 html 根元素的字体大小的单位。 我们通过修改 html 中 font-size 的字体大小来控制 rem 的大小。 比如: html { font-size: 10px; } .box { width: 10rem; height: 20rem; } 当 html 中 font-size: 10px; 时,此时 1rem = 10px,所以 b...
https://www.tsingfun.com/it/tech/1411.html 

新浪是如何分析处理32亿条实时日志的? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...更好地传递实时日志分析的价值。为用户做好服务也不是修改几个配置文件,调优几个程序运行参数就能搞定的。为了提供更好的服务,我们在下面三个方向做了努力: 一、提升服务质量 我们首先做了Elasticsearch优化,Hardware L...
https://www.tsingfun.com/it/cpp/656.html 

Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术

...程序装入的时候也已经有效,但在整个执行过程中不需要修改,这些数据可以放在.const段中,.const段是常量段,它是可读不可写的。一般为了方便起见,在小程序中常常把常量一起定义到.data段中,而不另外定义一个.const段。在...
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How to get “wc -l” to print just the number of lines without file name?

... In AIX,ksh, this will always have a space preceeding the number. We have to use | awk '{print $1}' or a cut, to trim off the spaces. Another way to trim would be to enclose with an echo. – rao ...
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How to mkdir only if a directory does not already exist?

I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to create a directory. But the directory may already exist, in which case I do not want to do anything. So I want to either test to see that the directory does not exist, or suppress the "Fil...
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How can I create a directly-executable cross-platform GUI app using Python?

... Python 3, nor is it listed in the roadmap of future releases. I mean, is AIX and Solaris support really more useful than Python 3? – Dave Nov 10 '11 at 19:57 11 ...
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How to get the command line args passed to a running process on unix/linux systems?

...mmand will work everywhere, the /proc stuff is OS specific. For example on AIX there is no cmdline in /proc. share | improve this answer | follow | ...
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How to 'grep' a continuous stream?

...x) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX). share | improve this answer | follow | ...
https://www.tsingfun.com/it/tech/652.html 

CDN(内容分发网络)技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...为指定的网站提供加速服务的同时降低对ICP的影响,只要修改整个访问过程中的域名解析部分,以实现透明的加速服务,下面是CDN网络实现的具体操作过程。   1)、作为ICP,只需要把域名解释权交给CDN运营商,其他方面不需...