El problema que tendrías con el using namespace std; What are the uses of using? Es que si, por ejemplo, quisieras declarate algo con el nombre vector entraría en conflicto con el vector de la stl, y puede llevar a errores.
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User kokos answered the wonderful hidden features of c# question by mentioning the using keyword. Use和using的区别为：意思不同、用法不同、词性不同。 一、意思不同 1、use：用，使用。 2、using：利用，运用。 二、用法不同 1、use：use是及物动词，接名词、代词作宾语。也可接由as短. You can achieve the same result by putting the object inside a try.
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The using scope modifier is supported in the following contexts:
It is used in different situations and i am trying to find if all those have something in common and there is a reason why the using. 243 what is the logic behind the using keyword in c++? Although i think it would be better to organize like this because it's a lot easier to see what is. In particular, this is the difference between a using directive (which makes types available via different or shorter names) and a using statement (which calls dispose automatically).
Either way, when the using block is exited (either by successful completion or by error) it is closed. Can you elaborate on that? The using statement ensures that dispose is called even if an exception occurs while you are calling methods on the object.
