Re: Compiler Error CS0702

Enum and delegate could indeed be useful. (In particular, I'd like to
write a generic version of Enum.Parse to avoid the casts.)

Yes, and I can only guess that support of them was left out because they
don't buy as much as class and struct do. But I see no reason why they
_can't_ be supported by an implementation. So I see no reason for the spec to
disallow them.

If, when generics were first added to the language, the spec had said that
they _are_ to be supported then they _would_ be supported. The argument that
the spec says they _aren't_ because the current implementation doesn't
support them is backward. A _language_ exists separate from any particular
_implementation_.


We can use enums as type parameters, I see no reason not to be allowed to
constrain to them. It's not as if they weren't allowed in generics at all.

I'm looking for a _conceptual_ reason why they aren't, not an
implementation-based reason and so far have seen none.

If one regards _only_ the language, not considering .net, the CLR, CTS etc.;
is there some reason why enum and delegate should _not_ be supported as
constraints?

.

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