Is there any way to make the IO Monad lazy? The simplified version of my problem is that I want to generate an infinite structure from an IOArray and then consume only the relevant part of it. The real version of my problem is that the IOArray is embedded 4 API layers deep and it would be a lot of effort to change all those APIs and dependent code for this 1 change. Sengan
On Tue, 3 Sep 2002 14:49:45 -0400 Sengan.Baring-Gould@nsc.com wrote:
Is there any way to make the IO Monad lazy?
The simplified version of my problem is that I want to generate an infinite structure from an IOArray and then consume only the relevant part of it.
Yes, unsafeInterleaveIO. http://www.haskell.org/ghc/docs/latest/html/base/System.IO.Unsafe.html#unsaf... This is how getContents is implemented so that it reads the file lazily. Be careful of course it is "unsafe". Duncan
participants (2)
-
Duncan Coutts -
Sengan.Baring-Gould＠nsc.com