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Purpose of memory alignment
...yte reads would make the memory subsystem throughput tightly bound to the em>x m>ecution unit throughput (aka cpu-bound); this is all reminiscent of how PIO mode was surpassed by DMA for many of the same reasons in hard drives.
The CPU always reads at its word size (4 bytes on a 32-bit processor), so wh...
对外网用户的squid代理+认证 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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1、最小化安装FreeBSD6.2RELEASE
2、配置内核：
jiulongprom>x m>ynew# cd /usr/src/sys/i386/conf
jiulongprom>x m>ynew# cp GENERIC funpower
jiulongprom>x m>ynew# ee funpower
修改内核配置文件，将不需要的选项（如网卡）之类的前面打#，然后按esc并按a保存退出，再执...
Java 7 language features with Android
...know that Android reads the bytecode that Java spits out and turns it to dem>x m>. So I guess my question is can it understand the bytecode of Java 7?
...
Can (domain name) subdomains have an underscore “_” in it?
...a domain name. Let me quote the standard, RFC
2181, section 11, "Name syntam>x m>":
The DNS itself places only one restriction on the particular labels
that can be used to identify resource records. That one
restriction relates to the length of the label and the full
name. [...] Implementation...
Why java.lang.Object is not abstract? [duplicate]
...ce, there would probably have been a lot less frustration around the complem>x m>ities of these two if they had both been made abstract. This would require developers to figure out how they should be implementing them, making it more obvious that they should be consistent (see Effective Java). However, I...
Error handling in Bash
What is your favorite method to handle errors in Bash?
The best em>x m>ample of handling errors I have found on the web was written by William Shotts, Jr at http://www.linum>x m>command.org .
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Path of assets in CSS files in Symfony 2
...e was launched from
"/app_dev.php/"
"/app.php/"
and "/"
thus giving 14 m>x m> 3 = 42 tests.
Additionally, all this has been tested working in a subdirectory, so there is no way to fool by giving absolute URLs because they would simply not work.
The tests were two unnamed images and then divs named ...
C++ valarray vs. vector
...rs a lot. They're nifty and fast. But I know this thing called a valarray em>x m>ists. Why would I use a valarray instead of a vector? I know valarrays have some syntactic sugar, but other than that, when are they useful?
...
Returning a C string from a function
... (mbcs)) that are used to cope with international characters. UTF-8 is an em>x m>ample of an mbcs. For the sake of intro, I quietly 'skip over' all of this.
Memory:
This means that a string like "my string" actually uses 9+1 (=10!) bytes. This is important to know when you finally get around to allocat...
“Eliminate render-blocking CSS in above-the-fold content”
...insights to try and improve my site's performance, and so far it's proven em>x m>tremely successful. Things like deferring scripts worked beautifully, since I already had an in-house version of jQuery's .ready() to defer scripts until the page had loaded fully, all I had to do was inline that particula...