大约有 40,000 项符合查询结果（耗时：0.0568秒） [XML]
How to detect Safari, Chrome, IE, Firefox and Opera browser?
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Only use the browser detection method if it's truly necessary, such as showing browser-specific instructions to install an extension. Use feature detection when possible.
Demo: https://jsfiddle.net/6spj1059/
// Opera 8.0+
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera ||...
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...
Finding Number of Cores in Java
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@universe blowing up and such : or the machine actually has more than 2,147,483,647 logical threads available ? ;)
– Pierre Henry
Oct 22 '12 at 13:08
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What exactly are unmanaged resources?
...inside does the "dirty work" (communicates with the operating system using Win32 dlls, calling low level functions or even assembler instructions) which really open the file. And this is, what .NET doesn't know about, unmanaged.
But you perhaps can open the file by yourself using assembler instructi...
How is TeamViewer so fast?
...neric desktop usage is linear movement of elements (scrolling text, moving windows, etc. opposed to transformation of elements).
The DirectX 3D performance of 1 FPS seems to confirm my guess to some extent.
share
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git replacing LF with CRLF
Running git on a Windows XP machine, using bash. I exported my project from SVN, and then cloned a bare repository.
20 Answ...
What is the best way to create constants in Objective-C
...s defined in foundation and compiles to compatible formats for C, C++, and Win32.
As defined in NSObjCRuntime.h
#if defined(__cplusplus)
#define FOUNDATION_EXTERN extern "C"
#else
#define FOUNDATION_EXTERN extern
#endif
#if TARGET_OS_WIN32
#if defined(NSBUILDINGFOUNDATION)
#define FO...
LR性能测试结果样例分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...所用的时间。如果使用 FTP，则服务器在开始处理客户端命令之前，必须验证该客户端。FTP验证度量仅适用于 FTP协议通信
Receive Time
显示从服务器收到最后一个字节并完成下载之前经过的时间。接收度量是很好的...
What is a message pump?
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A message loop is a small piece of code that exists in any native Windows program. It roughly looks like this:
MSG msg;
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
The GetMessage() Win32 API retrieves a message from Windo...
How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
...ges and manage everything with pip. (This is not that trivial if you're on Windows...)
Build your own conda packages, and manage everything with conda.
I would personally recommend the third option since it's very easy to build conda packages. There is a git repository of example recipes on the co...