I'm trying my hand at writing a Producer "transformer" similar to `Pipes.ByteString.lines` which will split a ByteString stream into lines ending in the string `"xy"`.
You can view my latest attempt at: http://lpaste.net/165424 My functions corresponding to `line`, `_lines` and `lines` are `splitXY`, `_splitXY`, and `splitXYs`. It seems to work - try running `main1` and `main2`. The questions I have are: 1. Any issues with the code? (One problem I just spotted while writing this post is that if the input stream ends in `"xy"` an extra empty string is yielded at the end.) 2. Is there a library function which does the work of `loop1` -- i.e. traversing down a `Producer ... (Producer ...)` chain? 3. `splitXYs` was written to be analogous to `lines`, but GHC complains when I try type it the same way. ??? 4. This was just an exercise in understanding how `lines` worked. What would be the recommended way to do this in the pipes ecosystem? Thanks, Erik -- You received this message because you are subscribed to the Google Groups "Haskell Pipes" group. To unsubscribe from this group and stop receiving emails from it, send an email to haskell-pipes+unsubscr...@googlegroups.com. To post to this group, send email to haskell-pipes@googlegroups.com.
