Re: [Haskell-beginners] consing an element to a list inside a file

I checked it by using :t readCal :: IO Calendar and readCal2 :: Calendar -> IO Calendar so the function to call (readCal) is what it should be. thanks! -------- Original-Nachricht --------

Datum: Fri, 19 Feb 2010 01:54:05 +0100 Von: kane96@gmx.de An: Daniel Fischer CC: beginners@haskell.org Betreff: Re: [Haskell-beginners] consing an element to a list inside a file

ok, looks much easier and works :)

But what are now the correct signatures for the function? Normally the "one and only" function should be: readCal :: IO Calendar My function are: readCal = readCal2 datelist and: readCal2 datelist = do... which returns the Calendar (the list of dates)

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Datum: Fri, 19 Feb 2010 00:41:56 +0100 Von: Daniel Fischer An: kane96@gmx.de CC: beginners@haskell.org Betreff: Re: [Haskell-beginners] consing an element to a list inside a file

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Am Freitag 19 Februar 2010 00:25:18 schrieb kane96@gmx.de:

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ok, now I did it by just calling from the original function by to a new one with an empty list at the beginning.

How can I add the date at the end of the list? By creating a new list from the new date and using concat or is there a simpler way?

Better stick it to the front by (:) and reverse the list just before printing.

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