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?
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 …
网页被cloudsflare锁定该如何解封? - 知乎
2025年1月13日 · 您遇到的问题是由 Cloudflare 提供的安全保护机制引发的。Cloudflare 是一家提供网站性能和安全服务的公司，它为网站提供 DDoS 防护 、 流量过滤 、 缓存加速 等服务。 …
What is the C# Using block and why should I use it? [duplicate]
2020年2月26日 · What is the purpose of the Using block in C#? How is it different from a local variable?So the using statement will automatically dispose of the object once that context is …
MySQL JOIN ON vs USING? - Stack Overflow
2021年2月19日 · 373 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 …
What's the problem with "using namespace std;"?
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 …
你了解世坤的 worldquant brain 平台吗？ - 知乎
2024年12月12日 · 世坤是工厂模式做量化投资的，最近注册了下WorldQuant，花了几天时间到了GOLD LEVLE，接着就可以申请兼职顾问赚钱挖矿了，我对Brain平台也有了初步的了解。 可以 …
in a "using" block is a SqlConnection closed on return or ...
Yes Yes. Either way, when the using block is exited (either by successful completion or by error) it is closed. Although I think it would be better to organize like this because it's a lot easier to see …
Should 'using' directives be inside or outside the namespace ...
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 directives inside
c# - What is the difference between using and await using ...
2019年10月29日 · using var disposable = new Disposable(); // Do something What is the difference between using and await using? How should I decide which one to use?