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Nginx url重写rewrite实例详解 - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
.... 有两种实现方法,第一种方法是判断nginx核心变量host(老版本是http_host)：
server {
server_name www.jefflei.com jefflei.com ;
if ($host != 'www.jefflei.com' ) {
rewrite ^/(.*)$ http://www.jefflei.com/$1 permanent;
}
...
}
第二种方法：
server {
server_name jef...
How do I find out which process is locking a file using .NET?
...as impossible to reliably get the list of processes locking a file because Windows simply did not track that information. To support the Restart Manager API, that information is now tracked.
I put together code that takes the path of a file and returns a List<Process> of all processes that a...
What is the difference between include and extend in Ruby?
...ils about include, with its default behavior, assuming you've run the following code
class Klazz
include Mod
end
If Mod is already included in Klazz, or one of its ancestors, the include statement has no effect
It also includes Mod's constants in Klazz, as long as they don't clash
It gives Kla...
浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...变为1 1000 0000 这样才能转化为
-128输出，不然1000 0000 如何输出？这当然是我的一种推断，具体怎么实现还得问CPU的设计者了。。。。
再看一个例子：
char a=-129;
printf("%d",a) ; 会输入多少？？ 结果为127 ，为...
String concatenation: concat() vs “+” operator
...thod should be faster. However, with more strings the StringBuilder method wins, at least in terms of performance.
The source code of String and StringBuilder (and its package-private base class) is available in src.zip of the Sun JDK. You can see that you are building up a char array (resizing as ...
Join vs. sub-query
...version-specific and query-specific.
Historically, explicit joins usually win, hence the established wisdom that joins are better, but optimisers are getting better all the time, and so I prefer to write queries first in a logically coherent way, and then restructure if performance constraints warr...
Does pandas iterrows have performance issues?
...ly at the start of the iteration; this savings alone is one of the biggest wins.
Better caching: Iterating over a C array is cache-friendly and thus very fast. A pandas DataFrame is a "column-oriented table", which means that each column is really just an array. So the native actions you can perform...
How to get time in milliseconds since the unix epoch in Javascript? [duplicate]
...amp in milliseconds
console.log( now );
Prior to ECMAScript5 (I.E. Internet Explorer 8 and older) you needed to construct a Date object, from which there are several ways to get a unix timestamp in milliseconds:
console.log( +new Date );
console.log( (new Date).getTime() );
console.lo...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...ameter = iAPIProvider->getInterface<IParameterInterface>();
因为目前版本（1.5版本）的Google Mock还不支持模版函数，因此我们无法Mock IAPIProviderInterface中的getInterface，那我们现在怎么办？
如果你想做得比较完美的话我暂时也没想出办法，我...
How do I set a Windows scheduled task to run in the background? [closed]
...iveleges, can intentionally or unintentionally do harm. If it accesses the internet someone may compromise your system. It runs with different user profile so %USERPROFILE% will resolve to a different place. It won't see your documents (unless you hardcode paths). Files it creates may be unaccessibl...