[Haskell-cafe] Top-level TVars

[Tomasz Zielonka]

On Wed, Dec 14, 2005 at 09:51:16AM -0000, Simon Marlow wrote:
> > Here is an example how you can initialize a top-level STM variable.
> >     http://www.uncurry.com/repos/TimeVar/TimeVar.hs
> > It just forks a new thread inside unsafePerformIO, it runs
> > "atomically" in it and passes the result through ordinary MVar.
> 
> A cheaper way is just to seq the top-level TVar at the beginning of
> Main.main.

Yes, I tried that approach. However, imagine telling users of
your library to do that in every program (withSocketsDo comes
to mind).

Best regards
Tomasz

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