Consider using the time-lens package. import Data.Time.Lens import Data.Lens.Common
List comprehension style: [modL seconds (+ fromIntegral n) t | n <- [0..]] [modL minutes (+ n) t | n <- [0..]] (you need fromIntegral for seconds, because it is of fractional type in Data.Time). iterate style, as suggested by Karl: iterate (seconds ^+= 1) t iterate (minutes ^+= 1) t On Fri, Sep 14, 2012 at 7:29 AM, Magicloud Magiclouds < magicloud.magiclo...@gmail.com> wrote: > Hi, > Simple usage, I could make an instance of Enum to UTCTime, so > [utcTime..] could work. But that is so stiff. How if sometimes I want > to step by 1 min, sometimes I want to step by 1 sec? > So I think some way like [ t | addUTCTime last 60 ] could be nice. > But I cannot figure it out.... > Any idea? > -- > 竹密岂妨流水过 > 山高哪阻野云飞 > > And for G+, please use magiclouds#gmail.com. > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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