combinations of variable length nested lists

[Mark Robinson]

ok, thats a bit more eligant (and efficient) than my attempt in my reply 
to Hans :). You really think that can be written in "far fewer lines"?

thanks alot

blobby


I have no idea whether a list
 > comprehension in place of the second (double)
 > loop would be faster, because they have sometimes
 > turned out to be slower in places where you'd
 > think they'd be faster.)

What is a list comprehension, just out of interest :), I am always 
looking to reduce my ignorance.

Cheers blobby