On Feb 4, 2008 12:11 PM, Wolfgang Jeltsch [EMAIL PROTECTED] wrote:
Am Samstag, 2. Februar 2008 05:53 schrieb Derek Elkins:
I forgot to mention that the Text.Parsec modules should be preferred to
the Text.ParserCombinators.Parsec modules as the Haddock documentation
reveals.
I would have prefered to shorten ParserCombinators to Parsing and leave Parsec
under the parsing category. However, I would prefer if Parsing would move
out of Text since parsing is not just about parsing text. Parsec parses also
streams other than character streams now.
Recently, there was a discussion on the Yampa mailing list about where to put
FRP-related modules into the module hierarchy. There was the suggestion of
Control.FRP. It was noted, however, that Control seems to suggest imperative
programming while many things under Control are not restricted to that
paradigm (like monads, for example) and others (like FRP) have nothing to do
with imperative programming. We finally chose to introduce a separate
top-level module name FRP since the FRP stuff didn't seem to really fit in
any of the existing top-level categories.
I concluded from this discussion that the current module hierarchy is too deep
and that it might be good to remove the current top-level layer. So
Parsing.Parsec, for example, or Monad.Reader.
What do you and others think?
I would recommend reading Ontology is Overrated [1] as it might be of
relevant to this discussion. I've been asking myself lately if it
would be beneficial for libraries that are not very core (e.g.
Data.Map) to use a unique top-level name (e.g. Parsec.SubModule) and
leave categorization to Hackage. Or should we just try to cram
everything into the same module hierarchy (e.g. Parsing.Parsec,
Parsing.Foo, etc?).
Another question: If we continue with the current approach where
should we put versions of a library specialized to a certain type?
e.g.
Parsing.ByteString.Parsec or Parsing.Parsec.ByteString?
The current preference seems to be to use the latter but that makes it
hard to find all parsing libraries that parses bytestrings as they
would not be kept under Parsing.ByteString.
1. http://www.shirky.com/writings/ontology_overrated.html
-- Johan
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