Merge pull request #349 from coady/master

eriknw · web-flow · commit 38facbc42801 · 2016-11-03T20:36:57.000-05:00
Simplified cons.
diff --git a/toolz/itertoolz.py b/toolz/itertoolz.py
@@ -511,9 +511,7 @@ def cons(el, seq):
     >>> list(cons(1, [2, 3]))
     [1, 2, 3]
     """
-    yield el
-    for s in seq:
-        yield s
+    return itertools.chain([el], seq)
 
 
 def interpose(el, seq):
