[Haskell-cafe] Question on a common pattern

[Ozgur Akgun]

See this thread:
http://www.haskell.org/pipermail/haskell-cafe/2010-October/084291.html

On 14 March 2011 15:48, tsuraan <tsuraan at gmail.com> wrote:

> In my code, I'm doing this quite a lot:
>
> x <- someIO
> case x of
>  Opt1 -> ...
>
> Having a line for extracting the value from the IO (or STM) and then
> acting on the value seems unnatural.  Is there a more concise way to
> do this?  This code:
>
> case someIO of
>  Opt1 -> ...
>
> Doesn't work, but is there something like that, that is valid?
>
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-- 
Ozgur Akgun
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