On 3 October 2013 10:57, Roman Cheplyaka <r...@ro-che.info> wrote: > An interesting use case is my time-lens library. > http://hackage.haskell.org/package/time-lens-0.3/docs/Data-Time-Lens.html > > You can do things like > > >>> modL minutes (+5) (TimeOfDay 16 57 13) > 17:02:13 > > But one has to be somewhat lenient about the lens laws here.
Relatedly the thyme package (really fast time implementation) provides lenses for all its data types: http://hackage.haskell.org/package/thyme _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
