[Haskell] Space behaviour & hyperseq

Scott Turner p.turner at computer.org
Thu Jun 17 10:09:43 EDT 2004

On 2004 June 17 Thursday 08:45, Arjan van IJzendoorn wrote:
> function hyperseq and then applying it before the next iterations
> begins:
> hyperseq x y = if x==x then y else error "this is very unlikely"
> This is very expensive

The concept of DeepSeq bothers me, because usually more limited use of 
strictness will do the job, and sometimes total strictness can't be used.  
Alternatives are strictList_ and strictList as defined in the "Prelude 
Extensions" at 
You could substitute
     seq (strictList x) y
for hyperseq x y.

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