[Haskell-cafe] Best way to return Bool based on a successful pattern match?

[Nikolay Amiantov]

A nice idea! It can be helpful in some cases, although usually I have
more complex patterns, for example "get all DataDefinitions from a list
of TopLevelDefinitions parsed from a .hs file" or "filter all KeyPresses
directed to a particular window from an Event stream".

On 07/13/2015 04:24 PM, Adam Bergmark wrote:
> Perhaps this is of interest to
> you, http://hackage.haskell.org/package/generic-maybe
> 
> HTH,
> Adam

-- 
Nikolay.