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Why isn't String.Empty a constant?
...d of a constant? I'm just wondering if anyone knows what the reasoning was behind that decision.
4 Answers
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Java Generics Wildcarding With Multiple Classes
I want to have a Class object, but I want to force whatever class it represents to extend class A and implement interface B.
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How to do a simple file search in cmd
...not power shell). This is similar to opening explorer and using the search box at the top.
5 Answers
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How can I generate random alphanumeric strings?
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I heard LINQ is the new black, so here's my attempt using LINQ:
private static Random random = new Random();
public static string RandomString(int length)
{
const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
return new string(Enum...
Getting “type or namespace name could not be found” but everything seems ok?
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This can be the result of a .Net framework version incompatibility between two projects.
It can happen in two ways:
a client profile project referencing a full framework project; or
an older framework version targeting a newer f...
线程访问窗口资源的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...射表的一个重要的特征，它只存于一个线程当中。当你在B线程使用A线程的窗口对象指针pWnd，B线程对此对象指针做AssertValid时，会因为以下几种原因导致断言失败:
1. CHandleMap* pMap = afxMapHWND(); ASSERT(pMap != NULL)失败;该线程没...
What exactly is Apache Camel?
...s, I generally recommend people to read this Integration with Apache Camel by Jonathan Anstey. It's a well written piece which gives a brief introduction to and overview of some of Camel's concepts, and it implements a use case with code samples. In it, Jonathan writes:
Apache Camel is an open s...
Recommended way to insert elements into map [duplicate]
...you are forced to use insert.
operator[] needs the default constructor because the map checks if the element exists. If it doesn't then it creates one using default constructor and returns a reference (or const reference to it).
Because map containers do not allow for duplicate key values, the...
Django dynamic model fields
...n) to collect additional data in forms and report on the data. The latter bit makes JSONField not a great option, so instead I have the following solution:
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...户登录认证，拿到access_token，后续请求必备参数 【使用Web浏览框】
3、获取文件列表，返回JSON，拿出想要的文件的fsid 【使用Web客户端】
4、获取文件信息，返回JSON，根据fsid取出dlink 【使用Web客户端】
5、根据dlink...