#1 − just to get sure
Marc –
hi marco,
just to get things the right way (as i don’t know java very well):
is this wildcard-thing the same as the “WHERE” in C# 2?
For example:
public class A<MYTYPE>
where MYTYPE : MYBASETYPE, new
{
…
}
have to try your examples above in the c# and see if i get this working as well as it looks like a nice exercise for rainy weekends like this ;-)
cheers, marc
#2
Wildcards are a way to provide partial support for propert generics, in which—if B inherits from A—List<B> also inherits from List<A>. In both Java and C#, this is not the case, which makes passing generic parameters all the more difficult.
The
wherekeyword in C# corresponds to theextendskeyword in Java. It indicates that the actual generic parameter must conform to the given base type (which can be a class or an interface). In your example, the implementation of the generic class may call any features defined inMYBASETYPEonMYTYPE.