[Haskell-beginners] Type question

Paul Johnston Paul.A.Johnston at manchester.ac.uk
Mon Jan 5 15:40:56 EST 2009

Hi, I was playing around after getting the new O'Reilly book with lists 
and their operators!
Not sure what the below actually means?

Prelude> [] : []
it :: [[a]]

(Got :set +t on )

I thought the first argument of ':' must be an element, so is the empty 
list an element of the same type of the contents of the empty list?

Yours confused Paul :-)

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