[Haskell-cafe] Converting string to System.Time.ClockTime

[Antoine Latter]

On Thu, Dec 8, 2011 at 9:30 AM, dokondr <dokondr at gmail.com> wrote:
> Ok, maybe you could advise what packages to use for this simple scenario:
>
> I have two text strings with dates:
>
> s1 = "Wed, 07 Dec 2011 10:09:21 +0000"
> s2 = "Wed, 07 Dec 2011 10:11:00 +0000"
>
> I need:
> 1) Find how many seconds are between  these dates
> 2) Calculate the date in the middle between these dates

It looks like you already have 1) and 2) finished, using the 'time' package.

> 3) Print out all three dates in the different format, like these:
>  2011,  7 Dec, Wed, 10:11:00

If you need to convert into a specific time-zone you can use the
'utcToLocalTime' function in the 'time' package, which takes a UTCTime
and a TimeZone to create a 'LocalTime'. I'm just guessing that you
might want this, as your output format doesn't include time-zone
information.

Then for formatting, the 'Data.Time.Format' module in the 'time'
package has the function 'formatTime', which uses the same sort of
format string used by 'parseTime'.

I hope that helps! It took me a while to find my way around the 'time'
package properly.

Antoine