My guess is that your lines are small enough that they always end up in a single chunk, and therefore you're essentially folding over a list of length 1. I'm confused about your question though: isn't `number` the current line? On Mon, Sep 7, 2015 at 1:04 PM, Kees Bleijenberg <K.Bleijenberg@lijbrandt.nl
wrote:
My goal is to parse a big text-file line by line using the same parser for every line.
I am new to Conduit and I’ve read this https://www.fpcomplete.com/user/chad/snippets/random-code-snippets/folding-l... article.
After adding import Control.Monad.Trans.Resource for runResourceT and adding rankNTypes, I got it working.
Code in www.tbsoftware.nl/TestConduit/TestConduit7.hs
I don't understand what is going on in myFunc. Does CL.fold fold over the already read lines?
I wonder whether CL.fold loads the whole file in memory?
if I change
count <- CL.fold (\count t -> count + T.length t) 0 to
count <- CL.fold (\count t -> T.length t) 0
nothing changes in the output. If count is always zero, why using a fold?
How can I get the ‘current line’ in myFunc?
Kees
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