Re: [Haskell-beginners] IO String inside a CmdArgs data

It is funny, indeed :) In fact, I am after all going to get unsafe because what Daniel Fischer wrote above worked perfectly until I wanted to add annotations to ftConf (the "&= summary" bit in http://community.haskell.org/~ndm/cmdargs/). The only way I can go around the errors I get is precisely unsafe, so ah, you only live once ;) On 14 January 2011 21:36, Brent Yorgey wrote:

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@Daniel Fischer Thanks for the offer, it's very kind of you, but I'm afraid I'll just need to try to understand monads for the hundredth time :/

@Brent Yorgey Ah, thank you! But that would be the unsafe way, right? I think I should

On Fri, Jan 14, 2011 at 08:14:38PM +0100, Kamil Stachowski wrote: try

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to do it the "right" way, but I'm sure this'll come in handy when I get lost.

Yes, I was mostly linking to that package just because it is funny, it's probably not what you really want to do. =)

-Brent

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On 14 January 2011 20:00, Brent Yorgey wrote:

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On Fri, Jan 14, 2011 at 07:41:07PM +0100, Daniel Fischer wrote:

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b) if you absolutely have to have ftConf as a top-level name and it

is

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safe

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here:

import System.IO.Unsafe (unsafePerformIO)

{-# NOINLINE ftConf #-} ftConf :: FuzzyTimeConf ftConf = unsafePerformIO $ do now <- getClockTime return $ FuzzyTimeConf { time = convert now }

There's already a Hackage package to accomplish this:

http://hackage.haskell.org/package/acme-now

=)

-Brent

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