Data.Time is so weak ?!

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zaxis

31 Aug 2009 31 Aug '09

5:17 a.m.

today = fromGregorian 2009 8 31 then how to calculate the day passing 150 days ? today + 150 doesnot work ! -- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218462.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

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zaxis

31 Aug 31 Aug

5:37 a.m.

addDays 150 (fromGregorian 2009 8 31) will work. However, how can i get its weekday from the result ? thanks! zaxis wrote:

...

today = fromGregorian 2009 8 31

then how to calculate the day passing 150 days ?

today + 150 doesnot work !

-- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218554.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

Colin Adams

6:15 a.m.

How about: import Data.Time.Calendar import Data.Time.Calendar.WeekDate main = do let (y, w, d) = toWeekDate $ addDays 150 (fromGregorian 2009 8 31) putStrLn $ show d 2009/8/31 zaxis :

...

addDays 150 (fromGregorian 2009 8 31) will work. However, how can i get its weekday from the result ?

thanks!

zaxis wrote:

...
today = fromGregorian 2009 8 31

then how to calculate the day passing 150 days ?

today + 150 doesnot work !

-- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218554.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Colin Adams Preston, Lancashire, ENGLAND

zaxis

7 a.m.

toWeekDate meets my need, thank you! Colin Adams-3 wrote:

...

How about:

import Data.Time.Calendar import Data.Time.Calendar.WeekDate

main = do let (y, w, d) = toWeekDate $ addDays 150 (fromGregorian 2009 8 31) putStrLn $ show d

2009/8/31 zaxis :

...
addDays 150 (fromGregorian 2009 8 31) will work. However, how can i get its weekday from the result ?

thanks!

zaxis wrote:

...
today = fromGregorian 2009 8 31

then how to calculate the day passing 150 days ?

today + 150 doesnot work !

-- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218554.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Colin Adams Preston, Lancashire, ENGLAND _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25219065.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

Colin Adams

6:16 a.m.

How about: import Data.Time.Calendar import Data.Time.Calendar.WeekDate main = do let (y, w, d) = toWeekDate $ addDays 150 (fromGregorian 2009 8 31) putStrLn $ show d 2009/8/31 zaxis :

...

addDays 150 (fromGregorian 2009 8 31) will work. However, how can i get its weekday from the result ?

thanks!

zaxis wrote:

...
today = fromGregorian 2009 8 31

then how to calculate the day passing 150 days ?

today + 150 doesnot work !

-- View this message in context: http://www.nabble.com/Data.Time-is-so-weak--%21-tp25218462p25218554.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Colin Adams Preston, Lancashire, ENGLAND

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Colin Adams
zaxis