On Wed, Apr 14, 2010 at 2:32 AM, Ivan Miljenovic
ivan.miljeno...@gmail.com wrote:
Why not use Maybe for func1 in the first place? Or are you wanting to
automagically make all uses of head, tail, etc. safe?
In which case there is already the 'safe' package:
Oh well, thanks for all the response.
I have a module with lots of one line function definitons, and they just
*look* ugly when I wrap the return type with Maybe. This is a
straightforward, and trivial job (the conversion) and I really don't care
about other problems (such as non-termination plus
Cafe,
Is there a way (without going into the IO lands) to achieve this:
data T = A | B | C
func1 :: T - T
func1 A = B
func1Fixed :: T - Maybe T
func1Fixed A = Just B
func1Fixed _ = Nothing
I want a function to generate func1Fixed, given func1.
I guess this is doable with exception handling
Excerpts from Ozgur Akgun's message of Tue Apr 13 12:02:06 +0200 2010:
Cafe,
Is there a way (without going into the IO lands) to achieve this:
[..]
There's package for that on hackage:
http://hackage.haskell.org/packages/archive/spoon/0.3/doc/html/Control-Spoon.html
However, this is
On 13 April 2010 20:02, Ozgur Akgun ozgurak...@gmail.com wrote:
func1 :: T - T
func1 A = B
func1Fixed :: T - Maybe T
func1Fixed A = Just B
func1Fixed _ = Nothing
Why not use Maybe for func1 in the first place? Or are you wanting to
automagically make all uses of head, tail, etc. safe?
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