Can you elaborate on that What are the uses of using? Similarly, if within using body something may happen, which is not directly related to the variable in using, then i wrap it with another try for that particular exception I rarely use exception in my catch es. 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.
182 in c++11, the using keyword when used for type alias is identical to typedef 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). Using var disposable = new disposable() // do something what is the difference between using and await using How should i decide which one to use? 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
However, you may feel free to put a using statement in your (private) *.cpp files. Of all the advantages using provides, it can't be combined with other predicates Select*from t join t2 using(i) and on 1 wouldnt work. There seem to be different views on using 'using' with respect to the std namespace Some say use ' using namespace std', other say don't but rather prefix std functions that are to be used with '.
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