diff --git a/common.py b/common.py
index cb3e7b6..bc15e58 100644
--- a/common.py
+++ b/common.py
@@ -95,6 +95,11 @@ class Splitter(object):
 def split(iterable, n):
     return Splitter(iterable, n).generators
 
+def icapture(iterable, result):
+    for i in iter(iterable):
+        result.append(i)
+        yield i
+
 if __name__ == '__main__':
 
     import pylab
diff --git a/test_common.py b/test_common.py
index ea6c5b2..384f7ce 100644
--- a/test_common.py
+++ b/test_common.py
@@ -29,3 +29,12 @@ def test_split():
             assert False
         except IndexError as e:
             assert e.args == (i,)
+
+def test_icapture():
+    x = range(100)
+    y = []
+    z = []
+    for i in common.icapture(x, result=y):
+        z.append(i)
+    assert x == y
+    assert x == z