Add Switch::getSignalNumber

Author: jmirabel

include/sot/core/switch.hh

@@ -52,6 +52,12 @@ namespace dynamicgraph {
           "    Set number of input signals\n";
         addCommand ("setSignalNumber", makeCommandVoid1
             (*this, &Switch::setSignalNumber, docstring));
+
+        docstring =
+          "\n"
+          "    Get number of input signals\n";
+        addCommand ("getSignalNumber",
+            new command::Getter<Switch, int> (*this, &Switch::getSignalNumber, docstring));
       }
 
       ~Switch () {}
@@ -85,6 +91,11 @@ namespace dynamicgraph {
         }
       }
 
+      int getSignalNumber () const
+      {
+        return (int)signals.size();
+      }
+
       private:
       typedef SignalPtr<Value, Time> Signal_t;
       typedef std::vector<Signal_t*> Signals_t;