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What's the difference between passing by reference vs. passing by value?
..."value" itself isn't very interesting (e.g. in C it's just an integer of a platform-specific size) -- what's interesting is what that value points to.
If what that reference type (that is, pointer) points to is mutable then an interesting effect is possible: you can modify the pointed-to value, and...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...mode GCM mode is probably they best choice here. Unfortunately the lack of platform implementations, in some cases (iOS) no vendor support, poor vetting in many cases lack of hardware support it is currently problematic. Otherwise it is good for the uninitiated in encryption since it has authenticat...
Should a Netflix or Twitter-style web service use REST or SOAP? [closed]
...cal in nature?
Anyway:
"Tools exist for all modern languages/frameworks/platforms to read in a WSDL and output proxy classes and clients. Implementing a REST service is done by hand by reading documentation."
Just like browser vendors have read and re-read the HTML 4.01 specification up and dow...
MFC学习总结 (90个技巧) dlg 上建立View - C/C++ - 清泛网 - 专注C++内核技术
...e don't run on Win32s, so check only two values
if(info.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
{ //On windows 95
m_cx = GetSystemMetrics(SM_CXFIXEDFRAME);
m_cy = GetSystemMetrics(SM_CYFIXEDFRAME);
}...
Logging best practices [closed]
...
I have to join the chorus recommending log4net, in my case coming from a platform flexibility (desktop .Net/Compact Framework, 32/64-bit) point of view.
However, wrapping it in a private-label API is a major anti-pattern. log4net.ILogger is the .Net counterpart of the Commons Logging wrapper API...
What is the best regular expression to check if a string is a valid URL?
...
What platform? If using .NET, use System.Uri.TryCreate, not a regex.
For example:
static bool IsValidUrl(string urlString)
{
Uri uri;
return Uri.TryCreate(urlString, UriKind.Absolute, out uri)
&& (uri.Sch...
How to write a scalable Tcp/Ip based server
...on a 32-bit machine with 2GB of memory, and well into 100,000s on a 64-bit platform with sufficient memory. From my own experience with this technique (altho nowhere near this kind of load) I have no reason to doubt these indicative figures.
IOCP versus thread-per-connection or 'select' primitives
...
List of All Locales and Their Short Codes?
...PHP application I am writing. Is there much variation in this data between platforms?
7 Answers
...
Why does modern Perl avoid UTF-8 by default?
...g is broken.
Code that assumes the default encoding is some sort of native platform encoding is broken.
Code that assumes that web pages in Japanese or Chinese take up less space in UTF‑16 than in UTF‑8 is wrong.
Code that assumes Perl uses UTF‑8 internally is wrong.
Code that assumes that enc...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
..., ulen))
goto short_packet;
uh = udp_hdr(skb);
}
/* UDP只提供有限的校验能力，如果不计算，则发送时为全0
* 校验和初始化，若udp头部的校验和字段为0，则设置不必校验标志位，若校验由硬
* 完成，且伪首部通过校验，则同...