either 3.3 → 3.4

raw patch · 3 files changed

+8/−1 lines, 3 filesPVP ok

version bump matches the API change (PVP)

API changes (from Hackage documentation)

Files

• CHANGELOG.markdown +4/−0
• either.cabal +1/−1
• src/Control/Monad/Trans/Either.hs +3/−0

@@ -1,3 +1,7 @@+3.4+---+* Delegate `fail` to the underlying `Monad`, rather than `error`.+ 3.3 --- * Inverted roles between `Semigroup` and `Alt`. This let us write `Alternative` and `MonadPlus` instances that are compatible.

@@ -1,6 +1,6 @@ name:          either category:      Control, Monads-version:       3.3+version:       3.4 license:       BSD3 cabal-version: >= 1.6 license-file:  LICENSE

@@ -184,6 +184,9 @@       Left  l -> return (Left l)       Right r -> runEitherT (k r)   {-# INLINE (>>=) #-}+  fail = EitherT . fail+  {-# INLINE fail #-}+  instance Monad m => MonadError e (EitherT e m) where   throwError = EitherT . return . Left