leftToMaybe/rightToMaybe

[Daniel Trstenjak]

> Some minor nitpicking: IMHO, the naming is inconsistent with
> respect to the existing functions:
> 
>   listToMaybe :: [a] -> Maybe a
>   maybeToList :: Maybe a -> [a]
> 
> In these two cases, '[lL]ist' and '[mM]aybe' both denote types, whereas
> in '{left,right}ToMaybe', 'left' is a constructor and 'Maybe' is a type.
> However, I have no better naming alternative to offer.

The names 'leftToMaybe' and 'rightToMaybe' could also be slightly irritating,
because reading the name 'leftToMaybe' might provoke the question: and
what happens for the 'Right' case.

I would prefer the names 'left' and 'right', but If the name clash with
'Control.Arrow' is an issue, than perhaps 'maybeLeft' and 'maybeRight'.


Greetings,
Daniel