[Haskell-cafe] Need some help with an infinite list

[Matthew Brecknell]

Reid Barton wrote:
> I'm surprised everyone is giving clever recursive solutions rather than
> 
> concatMap (\n -> replicateM n ['a'..'z']) [1..]
> 
> Regards,
> Reid

Well, you've lost efficient sharing with respect to my previous solution
and one other.

But it's a fair call, so...

tail $ concat $ iterate (map (:) ['a'..'z'] <*>) [[]]

Regards,
Matthew