Code style: Remove spaces after &.
diff --git a/ndn-cpp/node.hpp b/ndn-cpp/node.hpp
index 3eb9597..80d32a4 100644
--- a/ndn-cpp/node.hpp
+++ b/ndn-cpp/node.hpp
@@ -18,18 +18,18 @@
/**
* An OnData function object is used to pass a callback to expressInterest.
*/
-typedef func_lib::function<void(const ptr_lib::shared_ptr<const Interest>& , const ptr_lib::shared_ptr<Data>& )> OnData;
+typedef func_lib::function<void(const ptr_lib::shared_ptr<const Interest>&, const ptr_lib::shared_ptr<Data>&)> OnData;
/**
* An OnTimeout function object is used to pass a callback to expressInterest.
*/
-typedef func_lib::function<void(const ptr_lib::shared_ptr<const Interest>& )> OnTimeout;
+typedef func_lib::function<void(const ptr_lib::shared_ptr<const Interest>&)> OnTimeout;
/**
* An OnInterest function object is used to pass a callback to registerPrefix.
*/
typedef func_lib::function<void
- (const ptr_lib::shared_ptr<const Name>& , const ptr_lib::shared_ptr<const Interest>& , Transport& )> OnInterest;
+ (const ptr_lib::shared_ptr<const Name>&, const ptr_lib::shared_ptr<const Interest>&, Transport&)> OnInterest;
class Face;