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I took this from Jon Skeet’s “C# in depth”.
He mentioned the following is valid
(1) class Sample<T> where T:class,Stream
and the following is invalid
(2) class Sample<T> where T:Stream,class
what is the reason for the second one being invalid?
I think that the type constraint by value (
struct) or reference (class) has to be at first place, just like thenewconstraint has to be the last if they are more than one.Also the constraint by itself doesn’t make much sense,
Streamis a class,Twill be a reference type (class) only by that constraint, so basically it’s quite redundant.