[Haskell-beginners] Laziness to efficiently get one element from a set

[Jeffrey Brown]

Hi,

Suppose S is a big set, and I'd like to access just a single element from
it. The only natural way I've come up with to do that is this: head $
Data.Set.toList S. If I do that, am I correct that Haskell will not try to
convert all of S to a list; instead it will only convert one element, and
then return it, and leave the rest of the list unevaluated?

Thanks,
Jeff
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