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?

The identifier following the using keyword becomes a typedef-name and the optional attribute-specifier-seq following the identifier appertains to that typedef-name. It has the same …

27 Noll 2013 · 240 What is the logic behind the "using" keyword in C++? It is used in different situations and I am trying to find if all those have something in common and there is a reason …

31 Beal 2016 · 需要保证的是尽量不要在头文件里using任何东西尤其是namespace，要不然include进来的时候很容易莫名其妙产生 命名冲突。有条件的话，所有引入的符号都定义在自己 …

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 …

I have heard using namespace std; is wrong, and that I should use std::cout and std::cin directly instead. Why is this? Does it risk declaring variables that share the same name as something in …

2440 I have been running StyleCop over some C# code, and it keeps reporting that my using directives should be inside the namespace. Is there a technical reason for putting the using …

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?

I am trying to authenticate with GitHub using a personal access token. In the help files at GitHub, it states to use the cURL method to authenticate (Creating a personal access token). I have …

A using statement can be exited either when the end of the using statement is reached or if an exception is thrown and control leaves the statement block before the end of the statement.