Difference between generic argument constrained to an interface and just using the interface

Question

What is the difference between this:

void MyMethod(IMyInterface value)
{
    //...
}

and this:

void MyMethod(T val         


        

Answer 1

Yet another difference for generic methods in general (though not for your example) is that if one has a method like T MungeThing<T>(T it) where T:IMungeable<T> and class Fnord implements IMungeable<Fnord>, then code will be able to say: Fnord thing1, thing2; ... thing1 = MungeThing(thing2); and the compiler will know that MungeThing will return a Fnord rather than some arbitrary implementation of IMungable.