Proposal: add Functor instance to Control.Exception.Handler

Patrick Palka patrick at
Tue Jul 3 21:22:45 CEST 2012

On 3/19/2012 5:13 AM, Bas van Dijk wrote:
> On 18 March 2012 18:30, Patrick Palka <patrick at> wrote:
>> Proposed instance definition:
>> instance Functor Handler where
>>     fmap f (Handler h) = Handler (fmap f . h)
> Nice idea. +1
> Bas

This proposal is over three months old, and no one has raised any 
objections. I'm going to go ahead and create a ticket on the GHC Trac to 
have this included.

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