[Haskell-beginners] iterating over a range of dates

[David McBride]

import Data.Time.LocalTime
import Data.Time.Format
import System.Locale

now :: Maybe LocalTime -- Change this to get different types of values
(days, etc).
now = parseTime defaultTimeLocale "%F" "2011-07-11"

main = putStrLn $ case now of
                    Nothing -> "Failed Parse"
                    Just x -> (formatTime defaultTimeLocale "%F" x)

On Sat, Jul 9, 2011 at 12:33 PM, Rolf Hanson <rolf.hanson at gmail.com> wrote:
> Hi, I'm trying to iterate over a range of dates and print them out.
> Here's how I am doing it in Ruby:
>
> 'require 'date'
>
> now      = Date.parse('2011-07-11')
> end_date = Date.parse('2011-12-31')
>
> (now..end_date).each do |d|
>  # print out a date that looks like:
>  # Monday, July 11, 2011
>  puts "#{d.strftime('%A, %B %d, %Y')}"
> end
>
> I've been looking at the docs for Data.Time.Format and Data.Time.Calendar and am a bit puzzled at where to begin. Anyone have ideas? I've not found many (any?) examples of time and date manipulation in Haskell.
>
> RW
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