Hi,<br><br>The current API doesn&#39;t offer any efficient way to do something simple as e.g. summing the values in a map. I suggest we add a foldlWithKey&#39; function:<br><br>    <a href="http://hackage.haskell.org/trac/ghc/ticket/4261">http://hackage.haskell.org/trac/ghc/ticket/4261</a><br>

<br>Discussion deadline: 2 weeks<br><br>Cheers,<br>Johan<br><br>