How can I write like "x == either 1 or 2" in a programming language? [duplicate]

Question

Possible Duplicate:
Why do most programming languages only have binary equality comparison operators?

I have had a simple question for a fairly long time--since I started learning programming languages.

I'd like to write like "if x is either 1 or 2 => TRUE (otherwise FALSE)."

But when I write it in a programming language, say in C,

( x == 1 || x == 2 )

it really works but looks awkward and hard to read. I guess it should be possible to simplify such an or operation, and so if you have any idea, please tell me. Thanks, Nathan

Answer 1

Python allows test for membership in a sequence:

if x in (1, 2):

Answer 2

An extension version in C#

step 1: create an extension method

public static class ObjectExtensions
{
    public static bool Either(this object value, params object[] array)
    {
        return array.Any(p => Equals(value, p));
    }
}

step 2: use the extension method

if (x.Either(1,2,3,4,5,6)) 
{
}
else
{
}