Hmm... An idea: if a,b==c,d:

[Andrew Koenig]

>> Instead, (a, b) >= (c, d) is defined as (a>c or (a==c and b>=d)).

Richard> I just keep reading that again and again and thinking "WTF?
Richard> Why? Wha...."

Because that way it's an order relation.

Think of it as testing whether a word beginning with the letters
contained in "a" and "b" should come after a word beginning with
the letters contained in "c" and "d" in a dictionary.

-- 
Andrew Koenig, ark at research.att.com, http://www.research.att.com/info/ark