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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
...国的信息尤其不准。解决方案：使用我浪较新较全的IP库生成能适配maxmind geoip2 api的二进制格式IP库（maxmindDB），再开发logstash-filter-geoip2来解析IP。实测不仅IP解析准确率与公司IP库相同了，解析速度也提高了。
2，然后我们与...
Check if user is using IE
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Use below JavaScript method :
function msieversion()
{
var ua = window.navigator.userAgent;
var msie = ua.indexOf("MSIE ");
if (msie > 0) // If Internet Explorer, return version number
{
alert(parseInt(ua.substring(msie + 5, ua.indexOf(".", msie))));
}
else...
How to detect Windows 64-bit platform with .NET?
In a .NET 2.0 C# application I use the following code to detect the operating system platform:
29 Answers
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How can I determine the direction of a jQuery scroll event?
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Check current scrollTop vs previous scrollTop
var lastScrollTop = 0;
$(window).scroll(function(event){
var st = $(this).scrollTop();
if (st > lastScrollTop){
// downscroll code
} else {
// upscroll code
}
lastScrollTop = st;
});
...
How to provide user name and password when connecting to a network share
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0);
if (result != 0)
{
throw new Win32Exception(result);
}
}
~NetworkConnection()
{
Dispose(false);
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual ...
Soft hyphen in HTML ( vs. ­)
...as expected for ­ and ­ for Chrome and Firefox on Mac, on Windows (10), it keeps the characters and pastes hard hyphens into Notepad and invisible soft hyphens into applications that support them. IE (win7) always pastes with hyphens, even in IE10, and Safari (Mac) copies in a way w...
How to disable CSS in Browser for testing purposes
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Firefox (Win and Mac)
Via the menu toolbar, choose: "View" > "Page Style" > "No Style"
Via the Web Developer Toolbar, choose: "CSS" > "Disable Styles" > "All Styles"
If the Web Dev Toolbar is installed, people can use ...
Reading 64bit Registry from a 32bit application
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There is still native support for registry access under 64 bit Windows using .NET Framework 4.x. The following code is tested with Windows 7, 64 bit and also with Windows 10, 64 bit.
Instead of using "Wow6432Node", which emulates a node by mapping one registry tree into another mak...
How do I show the value of a #define at compile-time?
...gma message("_ATL_VER is " _CRT_STRINGIZE(_ATL_VER))
#pragma message("WINVER is " _CRT_STRINGIZE(WINVER))
#pragma message("_WIN32_WINNT is " _CRT_STRINGIZE(_WIN32_WINNT))
#pragma message("_WIN32_IE is " _CRT_STRINGIZE(_WIN32_IE))
#pragma message("NTDDI_VERSION is " _CRT_STRINGIZE(NT...
Why does the 260 character path length limit exist in Windows?
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Quoting this article https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation
Maximum Path Length Limitation
In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length for a path is MAX...