21 Nov
2005
21 Nov
'05
4:22 p.m.
On 2005-11-21 at 15:14EST Michael Benfield wrote:
I'm new to Haskell. I'm apparently misunderstanding something here.
When I run this program:
--------- module Main where
import System.Posix import System.CPUTime
printTime = getCPUTime >>= putStrLn . show
main = printTime >> sleep 5 >> printTime ---------
It produces this output: 1430000000000 1430000000000
or similar. In any case, both the numbers are the same. Should the second number not reflect a time 5 seconds later than the first? I've tried this with both GHC and Hugs, and both give me the same thing.
Should 'sleep 5' take any CPU time? -- Jón Fairbairn Jon.Fairbairn at cl.cam.ac.uk