Unix Time On Haskell - 16 Jul 2010
Some languages make it dead simple to get a timestamp or UNIX time as a single integer:
time() function exists on many languages, others present a Date object and even on
the shell is really easy to get it
Is not that hard in Haskell either, it’s just … different.
First, we need to remember that getting the current time is an IO operation, therefore we’ll be
working on the IO Monad.
From the time package we can get a POSIXTime and then use floor to get an Integral:
import Data.Time.Clock.POSIX main :: IO () main = print . floor =<< getPOSIXTime
Which will print a nice integer as would
perl -e 'print time' (not as short but
it get’s the job done)