[Haskell-cafe] slow code
briand at aracnet.com
Tue Jun 16 21:47:12 EDT 2009
On Jun 16, 2009, at 8:58 AM, Don Stewart wrote:
>> So I guess it's the show's, but I can't seem to find more efficient
>> float output.
>> FFI to sprintf ? yuch.
> Is your SMLNJ using lazy lists? :)
strictly speaking : no.
> Try hmatrix or uvector.
uvector is _probably_ the long term answer even after I solve the
double -> string problem.
However, I would like to reiterate that it's the double -> string
which is really the time/memory sink. I verified this by printing a
simple string based on the value (to make sure the value was
evaluated) and it runs fast enough for me.
Is there an efficient way to output double -> binary ?
I typically write my data files as binary anyway, because it's faster
for graph and the like to handle them anyway.
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