X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=GHC%2FSTRef.lhs;h=a0dba8d080f471ce8a04e7be9f517462c6de5def;hb=ac0439db2ece671089cec9ade21754c3ad22c134;hp=5eecb85937a73927bead0d69640f8a336992b3cb;hpb=86a17d42a36c3272e993854b9bfa2276ae669324;p=ghc-base.git

diff --git a/GHC/STRef.lhs b/GHC/STRef.lhs
index 5eecb85..a0dba8d 100644
--- a/GHC/STRef.lhs
+++ b/GHC/STRef.lhs
@@ -1,5 +1,6 @@
 \begin{code}
-{-# OPTIONS -fno-implicit-prelude #-}
+{-# OPTIONS_GHC -XNoImplicitPrelude #-}
+{-# OPTIONS_HADDOCK hide #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  GHC.STRef
@@ -14,6 +15,7 @@
 --
 -----------------------------------------------------------------------------
 
+-- #hide
 module GHC.STRef where
 
 import GHC.ST
@@ -39,10 +41,6 @@ writeSTRef (STRef var#) val = ST $ \s1# ->
     case writeMutVar# var# val s1#      of { s2# ->
     (# s2#, () #) }
 
--- |Mutate the contents of an 'STRef'
-modifySTRef :: STRef s a -> (a -> a) -> ST s ()
-modifySTRef ref f = readSTRef ref >>= writeSTRef ref . f
-
 -- Just pointer equality on mutable references:
 instance Eq (STRef s a) where
     STRef v1# == STRef v2# = sameMutVar# v1# v2#