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

As of C# 7.3, you can use the Enum constraint on generic types:

public static TEnum Parse(string value) where TEnum : Enum
{
    return (TEnum) Enum.Parse(typeof(TEnum), value);
}

If you want to use a Nullable enum, you must leave the orginial struct constraint:

public static TEnum? TryParse(string value) where TEnum : struct, Enum
{
    if( Enum.TryParse(value, out TEnum res) )
        return res;
    else
        return null;
}