diff --git a/examples/consumer-with-timer.cpp b/examples/consumer-with-timer.cpp
index b8415d0..9af81da 100644
--- a/examples/consumer-with-timer.cpp
+++ b/examples/consumer-with-timer.cpp
@@ -10,24 +10,17 @@
 #include "face.hpp"
 #include "util/scheduler.hpp"
 
-#include <stdexcept>
-
-#if NDN_CPP_HAVE_CXX11
-// In the std library, the placeholders are in a different namespace than boost.
-using namespace ndn::func_lib::placeholders;
-#endif
-
 void
 onData(ndn::Face &face,
-       const ndn::ptr_lib::shared_ptr<const ndn::Interest> &interest, const ndn::ptr_lib::shared_ptr<ndn::Data> &data)
+       const ndn::Interest& interest, ndn::Data& data)
 {
-  std::cout << "I: " << interest->toUri() << std::endl;
-  std::cout << "D: " << data->getName().toUri() << std::endl;
+  std::cout << "I: " << interest.toUri() << std::endl;
+  std::cout << "D: " << data.getName().toUri() << std::endl;
 }
 
 void
 onTimeout(ndn::Face &face,
-          const ndn::ptr_lib::shared_ptr<const ndn::Interest> &interest)
+          const ndn::Interest& interest)
 {
   std::cout << "Timeout" << std::endl;
 }
diff --git a/examples/consumer.cpp b/examples/consumer.cpp
index bba9a7f..4dd1036 100644
--- a/examples/consumer.cpp
+++ b/examples/consumer.cpp
@@ -9,30 +9,23 @@
 // #include <ndn-cpp-dev/face.hpp>
 #include "face.hpp"
 
-#include <stdexcept>
-
-#if NDN_CPP_HAVE_CXX11
-// In the std library, the placeholders are in a different namespace than boost.
-using namespace ndn::func_lib::placeholders;
-#endif
-
 void
 onData(ndn::Face &face,
-       const ndn::ptr_lib::shared_ptr<const ndn::Interest> &interest, const ndn::ptr_lib::shared_ptr<ndn::Data> &data)
+       const ndn::Interest& interest, ndn::Data& data)
 {
-  std::cout << "I: " << interest->toUri() << std::endl;
-  std::cout << "D: " << data->getName().toUri() << std::endl;
+  std::cout << "I: " << interest.toUri() << std::endl;
+  std::cout << "D: " << data.getName().toUri() << std::endl;
 }
 
 void
 onTimeout(ndn::Face &face,
-          const ndn::ptr_lib::shared_ptr<const ndn::Interest> &interest)
+          const ndn::Interest& interest)
 {
   std::cout << "Timeout" << std::endl;
 }
 
 void
-BlockPrinter(const ndn::Block &block, const std::string &indent="")
+BlockPrinter(const ndn::Block& block, const std::string& indent="")
 {
   std::cout << indent << block.type() << " (" << block.value_size() << ") [[";
   std::cout.write(reinterpret_cast<const char *>(block.value()), block.value_size());
@@ -56,8 +49,8 @@
 
     ndn::Face face;
     face.expressInterest(i,
-                          ndn::func_lib::bind(onData, boost::ref(face), _1, _2),
-                          ndn::func_lib::bind(onTimeout, boost::ref(face), _1));
+                          ndn::bind(onData, boost::ref(face), _1, _2),
+                          ndn::bind(onTimeout, boost::ref(face), _1));
 
     // processEvents will block until the requested data received or timeout occurs
     face.processEvents();
diff --git a/examples/producer.cpp b/examples/producer.cpp
index 53ccdc0..d081cb3 100644
--- a/examples/producer.cpp
+++ b/examples/producer.cpp
@@ -12,33 +12,21 @@
 #include "face.hpp"
 #include "security/key-chain.hpp"
 
-#if NDN_CPP_HAVE_CXX11
-// In the std library, the placeholders are in a different namespace than boost.
-using namespace ndn::func_lib::placeholders;
-#endif
-
 using namespace ndn;
 
 class Producer
 {
 public:
-  ////////////////////////////////////////////////////////////////////////////////////////
-  // CREATE TEST KEYCHAIN (THIS CODE IS ONLY FOR DEBUGGING, NOT TO BE USED IN REAL APPS //
-  ////////////////////////////////////////////////////////////////////////////////////////
   Producer()
-    : keyChain_()
   {
   }
-  ////////////////////////////////////////////////////////////////////////////////////////
-  ////////////////////////////////////////////////////////////////////////////////////////
-  ////////////////////////////////////////////////////////////////////////////////////////
 
   void
-  onInterest(const ptr_lib::shared_ptr<const Name> &name, const ptr_lib::shared_ptr<const Interest> &interest)
+  onInterest(const Name& name, const Interest& interest)
   {
-    std::cout << "<< I: " << *interest << std::endl;
+    std::cout << "<< I: " << interest << std::endl;
     
-    ndn::Data data(ndn::Name(interest->getName()).append("testApp").appendVersion());
+    ndn::Data data(ndn::Name(interest.getName()).append("testApp").appendVersion());
     data.setFreshnessPeriod(1000); // 10 sec
 
     data.setContent((const uint8_t*)"HELLO KITTY", sizeof("HELLO KITTY"));