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How do I do multiple CASE WHEN conditions using SQL Server 2008?
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There are two formats of case expression. You can do CASE with many WHEN as;
CASE WHEN Col1 = 1 OR Col3 = 1 THEN 1
WHEN Col1 = 2 THEN 2
...
ELSE 0 END as Qty
Or a Simple CASE expression
CASE Col1 WHEN 1 THEN 11 WHEN 2 THEN 21 ELSE 1...
How to change the author and committer name and e-mail of multiple commits in Git?
I was writing a simple script in the school computer, and committing the changes to Git (in a repo that was in my pendrive, cloned from my computer at home). After several commits I realized I was committing stuff as the root user.
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simple HTTP server in Java using only Java SE API
Is there a way to create a very basic HTTP server (supporting only GET/POST) in Java using just the Java SE API, without writing code to manually parse HTTP requests and manually format HTTP responses? The Java SE API nicely encapsulates the HTTP client functionality in HttpURLConnection, but is the...
GCC dump preprocessor defines
Is there a way for gcc/g++ to dump its preprocessor defines from the command line?
I mean things like __GNUC__ , __STDC__ , and so on.
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...实现。下面举两个例子。
例1.1 如何在LINGO中求解如下的LP问题：
在模型窗口中输入如下代码：
min=2*x1+3*x2;
x1+x2>=350;
x1>=100;
2*x1+x2<=600;
然后点击工具条上的按钮 即可。
例1.2 使用LINGO软件计算6个发点8个收点的最小费用运...
Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
This is what I found during my learning period:
10 Answers
10
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How do you iterate through every file/directory recursively in standard C++?
...C++, technically there is no way to do this since standard C++ has no conception of directories. If you want to expand your net a little bit, you might like to look at using Boost.FileSystem. This has been accepted for inclusion in TR2, so this gives you the best chance of keeping your implementatio...
Why do enum permissions often have 0, 1, 2, 4 values?
Why are people always using enum values like 0, 1, 2, 4, 8 and not 0, 1, 2, 3, 4 ?
7 Answers
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sed edit file in place
I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a d...
See changes to a specific file using git
...es for.
Normally, git diff by itself shows all the changes in the whole repository (not just the current directory).
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