4 Aug
2005
4 Aug
'05
8:29 a.m.
Am Mittwoch, 3. August 2005 19:07 schrieb Srinivas Nedunuri:
[...]
I have a bunch of ST code, and then somewhere in there I had the misfortune of needing to insert a file copy and bam I'm now stuck with the dang IO monad which goes and "infects" the entire program.
You can use something like myPureComputation :: String -> ST s Int where the parameter denotes the file content. Then you do something like this: do fileContent <- readFile "myFile" print $ runST $ myPureComputation fileContent So you don't need to infect your ST computation with I/O the same way you often don't need to infect an ordinary pure calculation with I/O. Or did you mean something different?
[...]
Regards, Wolfgang