[Haskell-cafe] least fixed points above something

[Martijn van Steenbergen]

Neil Mitchell wrote:
> if length (replicate 'a' 10000) == 1 then [] else head (replicate 'a' 10000)
> 
> This program will use O(1) memory. 

Doesn't length force evaluation of the 10000 cells?

Martijn.