isLeft/isRight (Was: leftToMaybe/rightToMaybe)

[Henning Thielemann]

On Wed, 7 Aug 2013, amindfv at gmail.com wrote:

> Another use, where I've defined isLeft in the past, is checking that a 
> set of computations was successful, e.g. "if all isRight foo"

And you are not interested in the results itself? I would certainly prefer 
'sequence foo'. Then you can also access the results of the computations.