Merge pull request #157 from romainfrancois/master

Minor improvements to Timer to make slightly more useful with multi threads

Thanks a lot, will apply.    

If it is not too much of a bother, entries in ChangeLog and/or NEWS are always welcome too.

Author: eddelbuettel

inst/include/Rcpp/Benchmark/Timer.h

@@ -100,15 +100,6 @@ namespace Rcpp{
 
 #endif
 
-    namespace{
-        std::string get_first(const std::pair<std::string,nanotime_t>& pair) {
-            return pair.first;
-        }
-        double get_second(const std::pair<std::string,nanotime_t>& pair){
-            return static_cast<double>(pair.second);
-        }
-    }
-
     class Timer {
     public:
         Timer() : data(), start_time( get_nanotime() ){}
@@ -130,6 +121,10 @@ namespace Rcpp{
             out.attr("names") = names;
             return out;
         }
+        
+        static std::vector<Timer> get_timers(int n){
+            return std::vector<Timer>( n, Timer() ) ;
+        }
 
     private:
         typedef std::pair<std::string,nanotime_t> Step;