Add unsafePerformEff

docs/Control/Monad/Eff/Unsafe.md

@@ -10,4 +10,13 @@ Change the type of an effectful computation, allowing it to be run in another co
 
 Note: use of this function can result in arbitrary side-effects.
 
+#### `unsafePerformEff`
+
+``` purescript
+unsafePerformEff :: forall eff a. Eff eff a -> a
+```
+
+Run an effectful computation. Note: use of this function can result in
+arbitrary side-effects.
+
 

src/Control/Monad/Eff/Unsafe.purs

@@ -8,3 +8,8 @@ import Control.Monad.Eff
 -- |
 -- | Note: use of this function can result in arbitrary side-effects.
 foreign import unsafeInterleaveEff :: forall eff1 eff2 a. Eff eff1 a -> Eff eff2 a
+
+-- | Run an effectful computation. Note: use of this function can result in
+-- | arbitrary side-effects.
+unsafePerformEff :: forall eff a. Eff eff a -> a
+unsafePerformEff = runPure <<< unsafeInterleaveEff