A more useful Monoid instance for Data.Map
bgamari.foss at gmail.com
Tue Mar 12 16:08:51 CET 2013
Roman Cheplyaka <roma at ro-che.info> writes:
> So maybe we should push the change that was discussed in another thread
> to move Semigroup into base, and only then change this instance.
Are you proposing that (.++.) /= mappend?
I think this sort of inconsistency would be a mistake, especially given
the evidence that suggests that relatively little code will be affected
by the change in mappend's semantics.
More information about the Libraries