[Haskell-cafe] Conditional IO ?

[David Barbour]

On Mon, Jun 20, 2011 at 1:33 AM, Dmitri O.Kondratiev <dokondr at gmail.com>wrote:

> Thanks! Everything works, and 'when' is really nice.
> ( I still have only basic monad  knowledge, need more time to spend on
> existing libraries)
>
>
I heavily use 'when' and 'unless'.  ('unless b x' is the same as 'when (not
b) x'.)
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