[Haskell-cafe] Telling the time

Andrew Coppin andrewcoppin at btinternet.com
Fri Jun 22 14:13:15 EDT 2007

Marc Weber wrote:
> On Thu, Jun 21, 2007 at 09:15:12PM +0100, Andrew Coppin wrote:
>> Greetings.
>> Is there a standard library function anywhere which will parse a string 
>> into some kind of date/time representation? And, further, is there some 
>> function that will tell me how many seconds elapsed between two such times?
> I know about Data.Time.*
> and System.Time ( tdSec . diffClockTimes )
> For parsing there is the library written by bringert:
> http://www.cs.chalmers.se/~bringert/darcs/parsedate/
> I don't know wether it is in the library index on the haskell.org.
> If not we should add it. I was'nt able to find it there.

OK, I'll try a deeper look...

>> (I see there's a giant pile of modules to do with dates and times, but I 
>> can't make much sense out of them - and in at least one place, the 
> The trouble is that time processing can be complicated if you want to
> pay attention to leap seconds/ years etc. leap seconds can't be known in
> advance etc.

I don't care about leap seconds - and neither does the hardware clock on 
the server that generates these logs. ;-) I just want to find out how 
long each step took...

>> documentation on the Haskell website doesn't actually match what's 
>> installed on my computer!)
> That's why I'm reading the source all the time ;)

Oh... goodie...

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