Haskell Platform decision: time to bless parsec 3?
aslatter at gmail.com
Sun Nov 7 05:35:58 EST 2010
On Sun, Nov 7, 2010 at 4:53 AM, Bryan O'Sullivan <bos at serpentine.com> wrote:
> On Sat, Nov 6, 2010 at 3:11 PM, Antoine Latter <aslatter at gmail.com> wrote:
>> Assuming we move the Parsec 'many' implementation into the Alternative
>> class definition, this should have no/little impact on performance for
>> all the combinators mentioned by Stephen.
> I can't speak for Parsec, but I certainly have a local definition of
> "many" in attoparsec, because the Alternative version isn't inlined.
> Makes a biggish difference to performance, though I do not recall the
> magnitude (2x?).
Ah, drat. However it looks like Parsec.Prim.many is not inlined.
I thought at the instance declaration site I could include an INLINE
pragma. Does that not work as one would hope?
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