On Tue, Jan 25, 2011 at 11:06 PM, Roman Leshchinskiy <rl at cse.unsw.edu.au> wrote: > Yes. See, for instance, http://hackage.haskell.org/packages/archive/vector/0.7.0.1/doc/html/Data-Vector.html#v:force That's exactly the operation I had in mind. I have read your vector code with enthusiasm. :) Johan