· User kokos answered the wonderful Hidden Features of C# question by mentioning the using keyword. Can you elaborate on that? What are the uses of using?
· Using calls Dispose() after the using -block is left, even if the code throws an exception. So you usually use using for classes that require cleaning up after them, like IO.
Updating the using keyword was specifically for templates, and (as was pointed out in the accepted answer) when you are working with non-templates using and typedef are …
· In a MySQL JOIN, what is the difference between ON and USING()? As far as I can tell, USING() is just more convenient syntax, whereas ON allows a little more flexibility …
In other word, if you know that the initialization of a variable in using may throw a particular exception, I wrap it with try-catch. Similarly, if within using body something may happen, which …
· Just in case it's not clear from the other answers here: - Do not put a using declaration (or using directive) at file scope in an include file/header! That will cause …
The problem with putting using namespace in the header files of your classes is that it forces anyone who wants to use your classes (by including your header files) to also be 'using' (i.e. …
· In C++11, the using keyword when used for type alias is identical to typedef. 7.1.3.2 A typedef-name can also be introduced by an alias-declaration. The identifier following …
Yes Yes. Either way, when the using block is exited (either by successful completion or by error) it is closed. Although I think it would be better to organize like this because it's a lot easier to see …
· From MSDN, using Statement (C# Reference) The using statement ensures that Dispose is called even if an exception occurs while you are calling methods on the object. You …
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