Haskell Foldable Wats

Kosyrev Serge _deepfire at feelingofgreen.ru
Thu Feb 25 21:35:13 UTC 2016

Mark Roberts <markandrusroberts at gmail.com> writes:
> Perhaps such warnings could be added to a tool like HLint? I do not
> think they belong in GHC.

People have circulated somewhat convincing examples that show how these
Functor instances lead to real bugs.

I doubt they would agree.

Besides -- these warning are supposed to be opt-in at the use sites,
aren't they?

с уважениeм / respectfully,
Косырев Сергей

More information about the Libraries mailing list