[Haskell-cafe] "Casting" newtype to base type?

[Ozgur Akgun]

Hi Vlatko.

On 2 July 2013 16:03, Vlatko Basic <vlatko.basic at gmail.com> wrote:

> Is there a nicer way to extract the 'IO String' from 'IOS',
> without 'case' or without pattern matching the whole 'P'?
>

You might enjoy the newtype package.

http://hackage.haskell.org/package/newtype

Hope this helps,
Ozgur.
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