Can you use implicit type variables with a class named `var`?

Question

I just found out that the var keyword can be used as the class name:

 public class var // no problem here { } 

Now, if I overload the implicit casting operator, I can use my class in an interesting way:

 namespace MyApp { class Program { static void Main(string[] args) { var x = 1; // var is of type MyApp.var } } public class var { public implicit operator var(int i) { return new var(); } } } 

In such a scenario, is it still possible to somehow force the compiler to infer types? This blog entry says it’s not possible (skip to the paragraph starting with “Or, another example”), but maybe something has changed since 2009

Answer 1

To make it short

It is not possible to use an implicit variable declaration if you name the class var .

Could the C # development team simply prohibit name classes to avoid confusing code?

No, because it can break some code written before a new var value appears in the language. All legacy codes with var as class names will no longer compile. And lately, I read that backward compatibility is very important for the C # development team.