diff --git a/examples/daemon/ledflasher/ledflasher.cc b/examples/daemon/ledflasher/ledflasher.cc
index 4733f18..9e4a9e1 100644
--- a/examples/daemon/ledflasher/ledflasher.cc
+++ b/examples/daemon/ledflasher/ledflasher.cc
@@ -66,10 +66,10 @@
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
     int32_t led_index = 0;
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     bool cmd_value = false;
-    if (params->GetInteger("_led", &led_index) &&
-        params->GetBoolean("_on", &cmd_value)) {
+    if (params.GetInteger("_led", &led_index) &&
+        params.GetBoolean("_on", &cmd_value)) {
       // Display this command in terminal
       LOG(INFO) << cmd->GetName() << " _led: " << led_index
                 << ", _on: " << (cmd_value ? "true" : "false");
@@ -96,9 +96,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     int32_t led_index = 0;
-    if (params->GetInteger("_led", &led_index)) {
+    if (params.GetInteger("_led", &led_index)) {
       LOG(INFO) << cmd->GetName() << " _led: " << led_index;
       led_index--;
       led_status_[led_index] = ~led_status_[led_index];
diff --git a/examples/daemon/light/light.cc b/examples/daemon/light/light.cc
index 31e3a24..90680d2 100644
--- a/examples/daemon/light/light.cc
+++ b/examples/daemon/light/light.cc
@@ -122,9 +122,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     int32_t brightness_value = 0;
-    if (params->GetInteger("brightness", &brightness_value)) {
+    if (params.GetInteger("brightness", &brightness_value)) {
       // Display this command in terminal.
       LOG(INFO) << cmd->GetName() << " brightness: " << brightness_value;
 
@@ -146,9 +146,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     std::string requested_state;
-    if (params->GetString("state", &requested_state)) {
+    if (params.GetString("state", &requested_state)) {
       LOG(INFO) << cmd->GetName() << " state: " << requested_state;
 
       bool new_light_status = requested_state == "on";
@@ -172,9 +172,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
-    base::DictionaryValue* colorXY = nullptr;
-    if (params->GetDictionary("_colorSetting", &colorXY)) {
+    const auto& params = cmd->GetParameters();
+    const base::DictionaryValue* colorXY = nullptr;
+    if (params.GetDictionary("_colorSetting", &colorXY)) {
       bool updateState = false;
       double X = 0.0;
       double Y = 0.0;
diff --git a/examples/daemon/lock/lock.cc b/examples/daemon/lock/lock.cc
index 860020c..10bea00 100644
--- a/examples/daemon/lock/lock.cc
+++ b/examples/daemon/lock/lock.cc
@@ -72,9 +72,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     std::string requested_state;
-    if (params->GetString("lockedState", &requested_state)) {
+    if (params.GetString("lockedState", &requested_state)) {
       LOG(INFO) << cmd->GetName() << " state: " << requested_state;
 
       weave::lockstate::LockState new_lock_status;
diff --git a/examples/daemon/sample/sample.cc b/examples/daemon/sample/sample.cc
index 2ad56e3..811e9fb 100644
--- a/examples/daemon/sample/sample.cc
+++ b/examples/daemon/sample/sample.cc
@@ -69,9 +69,9 @@
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
 
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     std::string name;
-    if (!params->GetString("_name", &name)) {
+    if (!params.GetString("_name", &name)) {
       weave::ErrorPtr error;
       weave::Error::AddTo(&error, FROM_HERE, "example",
                           "invalid_parameter_value", "Name is missing");
@@ -94,7 +94,7 @@
     base::DictionaryValue state;
     state.SetInteger("_sample._ping_count", ++ping_count_);
     device_->SetStateProperties(state, nullptr);
-    LOG(INFO) << "New state: " << *device_->GetState();
+    LOG(INFO) << "New state: " << device_->GetState();
 
     base::DictionaryValue result;
     cmd->Complete(result, nullptr);
@@ -108,9 +108,9 @@
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
 
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     int seconds;
-    if (!params->GetInteger("_seconds", &seconds))
+    if (!params.GetInteger("_seconds", &seconds))
       seconds = 10;
 
     LOG(INFO) << "starting countdown";
@@ -123,9 +123,9 @@
       return;
 
     if (seconds > 0) {
-      auto params = cmd->GetParameters();
+      const auto& params = cmd->GetParameters();
       std::string todo;
-      params->GetString("_todo", &todo);
+      params.GetString("_todo", &todo);
       LOG(INFO) << "countdown tick: " << seconds << " seconds left";
 
       base::DictionaryValue progress;
diff --git a/examples/daemon/speaker/speaker.cc b/examples/daemon/speaker/speaker.cc
index 89595b0..cd7d62f 100644
--- a/examples/daemon/speaker/speaker.cc
+++ b/examples/daemon/speaker/speaker.cc
@@ -72,10 +72,10 @@
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
 
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     // Handle volume parameter
     int32_t volume_value = 0;
-    if (params->GetInteger("volume", &volume_value)) {
+    if (params.GetInteger("volume", &volume_value)) {
       // Display this command in terminal.
       LOG(INFO) << cmd->GetName() << " volume: " << volume_value;
 
@@ -89,7 +89,7 @@
 
     // Handle isMuted parameter
     bool isMuted_status = false;
-    if (params->GetBoolean("isMuted", &isMuted_status)) {
+    if (params.GetBoolean("isMuted", &isMuted_status)) {
       // Display this command in terminal.
       LOG(INFO) << cmd->GetName() << " is "
                 << (isMuted_status ? "muted" : "not muted");
@@ -111,9 +111,9 @@
     if (!cmd)
       return;
     LOG(INFO) << "received command: " << cmd->GetName();
-    auto params = cmd->GetParameters();
+    const auto& params = cmd->GetParameters();
     std::string requested_state;
-    if (params->GetString("state", &requested_state)) {
+    if (params.GetString("state", &requested_state)) {
       LOG(INFO) << cmd->GetName() << " state: " << requested_state;
 
       bool new_speaker_status = requested_state == "on";