How about a Hash template?

[Andrei Alexandrescu]

On 4/28/11 11:00 AM, Alexander wrote:
> On 28.04.2011 17:46, Andrej Mitrovic wrote:
>
>> It works, but it makes the if statement ugly again. :)
>
>    Well, just a bit - still much better than (var == "..." || var = "..." || var == "..." ...), don't you think so? ;)
>
>    If compiler would support special "in" usage, automatically expanding values on the right to series of comparisons (like "var in [1,2,3,4,5]"), it would be really nice, of course :)

That was discussed, too. Walter and I support that although it's a 
special case. We didn't get around to talk the purist police into 
accepting it.

Andrei