Added an alias for EMPTY_ARG for readibility.

include/dynamic-graph/command-bind.h

@@ -38,15 +38,13 @@
 namespace dynamicgraph {
   namespace command {
 
-#define COMMAND_EMPTY_ARG std::vector<Value::Type>()
-
     template <class E >
       struct CommandVoid0
       : public Command
     {
     CommandVoid0(E& entity, boost::function<void(void)> function,
 		 const std::string& docString)
-      :Command(entity, COMMAND_EMPTY_ARG, docString)
+      :Command(entity, EMPTY_ARG, docString)
 	,fptr(function)
       {}
 
@@ -97,8 +95,6 @@ namespace dynamicgraph {
 namespace dynamicgraph {
   namespace command {
 
-#define COMMAND_EMPTY_ARG std::vector<Value::Type>()
-
     template <class E,typename T >
       struct CommandVoid1
       : public Command

include/dynamic-graph/command.h

@@ -70,6 +70,8 @@ namespace dynamicgraph {
       std::vector<Value::Type> valueTypeVector_;
       std::vector<Value> valueVector_;
       std::string docstring_;
+    public:
+      static const std::vector<Value::Type> EMPTY_ARG;
     };
   } // namespace command
 } // namespace dynamicgraph

src/command/command.cpp

@@ -22,6 +22,9 @@
 namespace dynamicgraph {
   namespace command {
 
+    const std::vector<Value::Type> Command::EMPTY_ARG = std::vector<Value::Type>();
+
+
     Command::~Command() {}
     Command::Command(Entity& entity,
 		     const std::vector<Value::Type>& valueTypes,