[Haskell-cafe] problem with IO, strictness, and "let"

Felipe Almeida Lessa felipe.lessa at gmail.com
Fri Jul 13 20:27:33 EDT 2007

On 7/13/07, Michael Vanier <mvanier at cs.caltech.edu> wrote:
> What I meant by really-truly-absolutely-I-mean-right-now-seq is something that would evaluate its
> argument as far as it is possible to do so i.e. something that forces strict evaluation of an
> argument.

What you want is to reduce something to normal form. We have the rnf
function (from the NFData class) on Control.Parallel.Strategies for
this purpose, see


and the must-read (IMHO) paper on




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