Re: How to write a lazy variant ?

I hate to followup to myself, but looks like I had to. I really was too tired and lazy version could be obtained by simple use of accumulator:

Are you _sure_ that's all it takes? I was expecting that you'd need 'unsafeInterleaveIO'. (This function is used to implement hGetContents. Some info about it shows up under google and in john launchbury and simon peyton jones' paper on lazy functional state threads (section 7.2)). -- Alastair Reid reid@cs.utah.edu http://www.cs.utah.edu/~reid/