7 Dec
2012
7 Dec
'12
12:14 p.m.
On 7 December 2012 09:25, Erik Hesselink
There is no need to define whenJust, since it is just a specialization of forM_ from Data.Foldable.
I don't know if that's such a good argument. I prefer my code readable -- too much abstraction can have a seriously bad effect on that. As a simple rule, if the user has to do type inference in their head, readability suffers. In this case, "forM_" implies we're iterating over something container like, "whenJust" means "I want to do something if this thing yielded a result". It depends on the context whether a "Maybe" is behaving more container-like or is indicating the presence of a result where there may not have been one. / Thomas