On Fri, Jan 27, 2012 at 10:30 AM, Christian Höner zu Siederdissen <choe...@tbi.univie.ac.at> wrote: > out of curiosity I have taken a look at > https://github.com/choener/BiobaseFasta/blob/master/Biobase/Fasta/Import.hs > thinking about how this would look like using conduit. > > How does one implement "unfoldConvStream" in conduit?
(I'm not familiar with the iteratee library -- only with the enumerator library -- so I may be off target here.) If I'm reading unfoldConvStream's type correctly, its counterpart is sequenceSink [1] [1] http://hackage.haskell.org/packages/archive/conduit/0.1.1.1/doc/html/Data-Conduit.html#v:sequenceSink > Right now, I'd assume to need a StateT which carries the state? > > == > > explanation: I carry fasta headers and window positions in a state, so > that very large fasta files can be worked on in constant space. > > == Note that Sources, Conduits and Sink all may carry any state they want using references [2]. That sequenceSink function is just a convenient wrapper. [2] http://hackage.haskell.org/packages/archive/conduit/0.1.1.1/doc/html/Control-Monad-Trans-Resource.html#g:4 Cheers! =) -- Felipe. _______________________________________________ Biohaskell mailing list Biohaskell@biohaskell.org http://malde.org/cgi-bin/mailman/listinfo/biohaskell
