From: Matthijs Kooijman <matthijs@stdin.nl>
Date: Tue, 13 Apr 2010 14:47:36 +0000 (+0200)
Subject: Replace fst with a lambda in a map.
X-Git-Url: https://git.stderr.nl/gitweb?p=matthijs%2Fmaster-project%2Fc%CE%BBash.git;a=commitdiff_plain;h=890ca965072754678ed31b904225f73aace98157

Replace fst with a lambda in a map.

Cλash doesn't like mapping the fst builtin yet, so avoid that for now.
---

diff --git a/reducer.hs b/reducer.hs
index 925e7f6..a565745 100644
--- a/reducer.hs
+++ b/reducer.hs
@@ -137,7 +137,7 @@ rippleBuffer ::
 rippleBuffer (State buf) (inp, shift) = (State buf', out1, out2)
   where
     -- Write value
-    next_valids              = (map fst buf) << True
+    next_valids              = (map (\(a, b) -> a) buf) << True
     buf''                    = zipWith selects buf next_valids
     selects cell next_valid  = if (not (fst cell)) && next_valid then
                                  (True, inp)