On Thu, Feb 24, 2011 at 12:45 PM, Andrew Coppin <andrewcoppin@btinternet.com> wrote:

Ah, yes, well there is one *small* problem... If you do that, the function becomes too strict.

The input list is being read from disk by lazy I/O. With the original implementation, the input file gets read at the same time as the output file is written. But runST returns nothing until the *entire* input has been compressed. So writing to disk doesn't start until the entire file has been slurped up into memory.

Anybody have any hints on how to get around this?