[Haskell-cafe] ANNOUNCE: simple-observer-0.0.1, a simple implementation of the observer design pattern

Andy Gimblett haskell at gimbo.org.uk
Wed Nov 11 19:43:55 EST 2009

Hi all,

Further to earlier discussion on this topic, I've just released a  
first version of this package to hackage:


It is a fairly simple implementation of subject/observer which I've  
recently used to good effect in an GUI written using wxHaskell.

Here's a blog post discussing it further and giving a simple example  
of use:


Many thanks for the earlier comments, even if they haven't resulted in  
any changes (yet?).

Best regards,


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