[Haskell-beginners] Early return in IO monad

[Tony Morris]

unless somePreCondition ...
 On 01/09/2013 4:07 AM, "Nathan Hüsken" <nathan.huesken at posteo.de> wrote:

> Hey,
>
> Is it somehow possible to return "early" in a do block of the IO monad?
> The eqivalent do in C:
>
> void doBlock() {
>     if (some preCondition) {
>       return;
>     }
>     ...
> }
>
> ???
>
> Thanks!
> Nathan
>
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