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.
Does "using" statement always dispose the object?
The using statement allows the programmer to specify when objects that use resources should release them. The object provided to the using statement must implement the IDisposable …
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. …
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 …
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 …
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.
How does `USING` keyword work in PostgreSQL? - Stack Overflow
2024年1月29日 · I am confused with the USING keyword which is used to join two tables in postgres. I first saw it in another SO post Compare two tables in postgres. I checked the …
c++ - Using std Namespace - Stack Overflow
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 …