Hello, One of my favorite features from Python is its notion of "file-like objects". For those of you unfamiliar with Python, here's a quick backgrounder: anything can present a file-like interface. It could be a file, socket, an interface to a gzip/gunzip processor, character set codecs, in-memory buffers, etc. File-like objects are used in Python for everything from gzip files to certain network data. The memory buffers are great for unit testing. As I've started working on some gzip stuff in Haskell, I've developed a prototype for a similar concept in Haskell. One of my main goals is to keep is as compatible with standard Haskell as I possibly can. To that end, a Handle is still acceptable as a parameter to any of the functions I'm proposing. My proposal is here: http://www.complete.org/~jgoerzen/t/MissingH.IO.HVIO.html I'm aware that others have been working on IO proposals; specifically, Simon Marlow's here: http://www.haskell.org/~simonmar/io/System.IO.html I'm especially interested in their feedback on my proposal, and I'm wondering: * Do you think HVIO has merit? * Would I be better advised to try to implement some existing ideas instead? * Are there any other implementations of these things that are ready to use? (With code) One note: I'm trying to keep the interface and behavior as identical to the normal System.IO interface as possible. So I'm still using Strings, raising the same exceptions, etc. In fact, the Handle instance of these classes looks like: instance Handle HVIOReader vGetChar = hGetChar ... -- John