boolean over multiple variables

[Nick Sabalausky]

"strtr" <strtr at spam.com> wrote in message 
news:hjd6t1$beh$1 at digitalmars.com...
> This may be is a very basic question, but is there a way to let me omit a 
> repeating variable when doing multiple boolean operations?
>
> if ( var == a || var == b || var == c || var == d)
> if ( var == (a || b || c || d) )

I do this:

-------------------------
import tango.core.Array;

void main()
{
    if( [3, 5, 6, 12].contains(7) )
    {
    }
}
-------------------------

There's probably a phobos equivilent, too.

Alhough, I would much prefer what other people mentioned about having "in" 
refer to the values of a collection rather than the keys. But I've been 
using the above as a substitute.