Anyone know a good workaround for the lack of an enum generic constraint?

Question

What I want to do is something like this: I have enums with combined flagged values.

public static class EnumExtension
{
    public static bool IsSet

        

Answer 1

You can achieve this using IL Weaving and ExtraConstraints

Allows you to write this code

public class Sample
{
    public void MethodWithDelegateConstraint<[DelegateConstraint] T> ()
    {        
    }
    public void MethodWithEnumConstraint<[EnumConstraint] T>()
    {
    }
}

What gets compiled

public class Sample
{
    public void MethodWithDelegateConstraint() where T: Delegate
    {
    }

    public void MethodWithEnumConstraint() where T: struct, Enum
    {
    }
}