[Haskell-cafe] Non-traversable foldables

Martijn van Steenbergen martijn at van.steenbergen.nl
Fri Oct 9 19:44:15 EDT 2009

Ross Paterson wrote:
> On Fri, Oct 09, 2009 at 04:41:05PM +0200, Martijn van Steenbergen wrote:
>> Can anyone think of datatypes that are Foldable but not Traversable?
> Set

Nice! Thank you all for your answers.


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