# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2007-12-28 05:55:40
# Node ID 4bb64294e5b48deca4812d7e3c5d66ecd4ecabd3
# Parent  b32a0596b2d75f6c54e13ee4432d4630e31d0474

util: simplify unique

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -236,13 +236,7 @@ def binary(s):
 
 def unique(g):
     """return the uniq elements of iterable g"""
-    seen = {}
-    l = []
-    for f in g:
-        if f not in seen:
-            seen[f] = 1
-            l.append(f)
-    return l
+    return dict.fromkeys(g).keys()
 
 class Abort(Exception):
     """Raised if a command needs to print an error and exit."""