PhobosWatch: manifest => enum

[Bastiaan Veelo]

Janice Caron wrote:
> On 12/29/07, "Jérôme M. Berger" <jeberger at free.fr> wrote:
>> Those usages should be deprecated
>> in favor of another keyword that would allow them plus extra
>> functionality (e.g. manifest constants) while "enum" is relegated to
>> its proper usage. I believe anything else would be too confusing
>> (particularly to newcomers).

Yes, please!

> It would be /really/ cool if Walter just implemented everything as he
> suggested, except for deprecating the word "enum" and replacing it
> with "manifest" everywhere.

"manifest", if not "define" (my preference) or "pure".

> Then "enum" could be redeployed for true enumerations only. e.g.
> 
>     enum Primary { red, blue, green }
>     Primary col = red;
>     int x = col; /* ERROR */
>     int x = cast(int)col /* STILL AN ERROR */
>     col = 1; /* ALSO AN ERROR */
>     col = cast(Primary)1; /* NOPE! */
> 
>     Primary col2 = col++; /* successor */
>     assert(col2 = Primary.blue);
>     if (col == col2) { /*...*/ }
>     if (col < col2) { /*...*/ }
> 
>     enum { x = 2 }; /* ERROR */
>     enum E { x = 2 }; /* ERROR */
>     enum E : int { x }; /* ERROR */
> 
> ...but it will never happen! (Sigh!)

Why not? It will break existing code, but given the length of these 
threads, D users may be prepared to cope with it where it does...

Bastiaan.