Skip to content

Add Either's Generic instance #60

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
wants to merge 1 commit into from
Closed

Add Either's Generic instance #60

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions src/Data/Either.purs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import Data.Foldable (class Foldable)
import Data.FoldableWithIndex (class FoldableWithIndex)
import Data.Functor.Invariant (class Invariant, imapF)
import Data.FunctorWithIndex (class FunctorWithIndex)
import Data.Generics.Rep (class Generic)
import Data.Maybe (Maybe(..), maybe, maybe')
import Data.Ord (class Ord1)
import Data.Traversable (class Traversable)
Expand Down Expand Up @@ -249,6 +250,8 @@ instance bitraversableEither :: Bitraversable Either where
instance semigroupEither :: (Semigroup b) => Semigroup (Either a b) where
append x y = append <$> x <*> y

derive instance genericEither :: Generic Either _

-- | Takes two functions and an `Either` value, if the value is a `Left` the
-- | inner value is applied to the first function, if the value is a `Right`
-- | the inner value is applied to the second function.
Expand Down