[Haskell-beginners] Early return in IO monad

[Kim-Ee Yeoh]

On Sun, Sep 1, 2013 at 1:05 AM, Nathan Hüsken <nathan.huesken at posteo.de>wrote:

> The eqivalent do in C:
>
> void doBlock() {
>     if (some preCondition) {
>       return;
>     }
>     ...
> }
>

Brent and Tony have already given the closest Haskell equivalents.

For completeness, it's worth pointing out that the above C is equivalent to

void doBlock() {
    if (some preCondition) {
      return;
    } else {
    ...
    }
}

So you can write it similarly in Haskell using if/then/else.

-- Kim-Ee
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