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 …
What are the uses of "using" in C#? - Stack Overflow
2017年3月8日 · 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?
c# - try/catch + using, right syntax - Stack Overflow
That "using" keyword has been around for a while and it's meaning is quite clear to me. And using it helps make the rest of my code clearer by keeping the amount of clutter to a minimum.
What is the logic behind the "using" keyword in C++?
2013年12月27日 · 239 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 …
What is the C# Using block and why should I use it? [duplicate]
2020年2月26日 · 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 …
What is the difference between using and await using? And how …
2019年10月29日 · 44 Justin Lessard's answer explains the difference between using and await using, so I'll focus on which one to use. There are two cases: either the two methods Dispose / …
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. …
What's the scope of the "using" declaration in C++?
2008年10月22日 · Just in case it's not clear from the other answers here: - Do not put a using declaration (or using directive) at file scope in an include file/header! That will cause …
grammar - 'I was using', 'I have used', 'I have been using', 'I had ...
2010年10月21日 · I had been using cocaine. Meaning, with a reference point in the past, starting a time before then up to the reference point, I was habitually using cocaine up to and including …
MySQL JOIN ON vs USING? - Stack Overflow
2021年2月19日 · Extremely good point. 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.