Using calls dispose() after the using -block is left, even if the code throws an exception. - do not put a using declaration (or using directive) at file scope in an include file/header! Either way, when the using block is exited (either by successful completion or by error) it is closed. 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 the … 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. Seeing everything in) … · in a mysql join, what is the difference between on and using()? The identifier following the using … · user kokos answered the wonderful hidden features of c# question by mentioning the using keyword. Is there a technical reason for putting the using directives inside · using var disposable = new disposable(); That will cause headaches for users of the header. As far as i can tell, using() is just more convenient syntax, whereas on allows a little more flexibility when the column … · just in case its not clear from the other answers here: Can you elaborate on that? Although i think it would be better to organize like this because its a lot easier to see what is … // do something what is the difference between using and await using? How should i decide which one to use? So you usually use using for classes that require cleaning up after them, like io. 7. 1. 3. 2 a typedef-name can also be introduced by an alias-declaration. I have been running stylecop over some c# code, and it keeps reporting that my using directives should be inside the namespace. What are the uses of using?
