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  1. What are the uses of "using" in C#? - Stack Overflow

    8 Márta 2017 · 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?

  2. What's the problem with "using namespace std;"?

    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. seeing everything …

  3. MySQL JOIN ON vs USING? - Stack Overflow

    19 Feabh 2021 · 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 when the column …

  4. What is the difference between 'typedef' and 'using'?

    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 mechanically identical, so …

  5. What is the difference between using and await using? And how can I ...

    29 DFómh 2019 · using var disposable = new Disposable(); // Do something What is the difference between using and await using? How should I decide which one to use?

  6. What is the logic behind the "using" keyword in C++?

    27 Noll 2013 · 182 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 the using …

  7. What is the C# Using block and why should I use it? [duplicate]

    The using statement is used to work with an object in C# that implements the IDisposable interface. The IDisposable interface has one public method called Dispose that is used to dispose of the object.

  8. What's the scope of the "using" declaration in C++?

    22 DFómh 2008 · But if you put the using declaration inside a namespace it's limited to the scope of that namespace, so is generally OK (with the usual caveats on your particular needs and style).

  9. c# - in a "using" block is a SqlConnection closed on return or ...

    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 what is …

  10. c# - 'using' statement vs 'try finally' - Stack Overflow

    29 Iúil 2015 · 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 can achieve the …