The Death of D1. (Was Tango vs Phobos)

[Christopher Wright]

Robert Fraser wrote:
> I see the first as a problem, too. An enum is an _enumeration_. It 
> should not be abused for bitfields, masks, constants or anything else. 
> Look at how it's used in Java/C# (ignoring the fact that Java's enum is 
> actually syntactic sugar for a class...):
> 
> - Only named enums are supported (otherwise, what are you enumerating?)
> - They can't be used as bitfields/masks (constants can be used for this 
> purpose)
> - You can't define them as arbitrary values.

Take C# this example from my job:

[Flags] // hint to the compiler: treat it as a bitfield
public enum DaysOfWeek
{
	Monday = 1,
	Tuesday = 2,
	Wednesday = 4,
	Thursday = 8,
	Friday = 16,
	Saturday = 32,
	Sunday = 64,
	None = 0,
	All = 127
}

DaysOfWeek weekends = DaysOfWeek.Saturday | DaysOfWeek.Sunday;

> In D, it's all water under the bridge and it's just a keyword; it 
> doesn't matter that much. That being said, it's still a bad selection of 
> keyword IMO and there's no argument that's going to convince me that 
> `enum string CRLF = "\r\n";` is somehow an _enumeration_.

You wouldn't get to the keyword "enum" just from the definition of 
"enumeration". But it's not too far from the previous usage.