From 362040299d52a33a2cf61f0a6e1111ec70a5263b Mon Sep 17 00:00:00 2001
From: Duda Dornelles <ddornell@thoughtworks.com>
Date: Fri, 17 Oct 2014 14:36:13 +0200
Subject: better tests for getting all tags and filtering all tags. some fixes
 go together

---
 service/pixelated/support/functional.py | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'service/pixelated/support/functional.py')

diff --git a/service/pixelated/support/functional.py b/service/pixelated/support/functional.py
index e779f5bc..8d258635 100644
--- a/service/pixelated/support/functional.py
+++ b/service/pixelated/support/functional.py
@@ -18,3 +18,9 @@ from itertools import chain
 
 def flatten(_list):
     return list(chain.from_iterable(_list))
+
+
+def unique(_list):
+    seen = set()
+    seen_add = seen.add
+    return [ x for x in _list if not (x in seen or seen_add(x))]
-- 
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