Enhancement - Date::operator-

- Implemented Date::operator-, to allow subtractions of Durations.

src/Date.cpp

@@ -24,7 +24,6 @@
 //     USA
 //
 ////////////////////////////////////////////////////////////////////////////////
-#include <iostream>
 #include <iomanip>
 #include <sstream>
 #include <time.h>
@@ -138,7 +137,7 @@ Date::Date (const std::string& input, const std::string& format /* = "m/d/Y" */)
         throw std::string ("\"") + input + "\" is not a valid date (d).";
       }
 
-      if (i + 1 < input.length ()                                                              &&
+      if (i + 1 < input.length ()                                                                    &&
           (input[i + 0] == '0' || input[i + 0] == '1' || input[i + 0] == '2' || input[i + 0] == '3') &&
           isdigit (input[i + 1]))
       {
@@ -808,6 +807,12 @@ bool Date::sameYear (const Date& rhs)
   return false;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+Date Date::operator- (const int delta)
+{
+  return Date (mT - delta);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 Date Date::operator+ (const int delta)
 {

src/Date.h

@@ -85,6 +85,7 @@ public:
   bool sameYear   (const Date&);
 
   Date operator+  (const int);
+  Date operator-  (const int);
   Date& operator+= (const int);
   Date& operator-= (const int);
 

src/tests/date.t.cpp

@@ -314,6 +314,8 @@ int main (int argc, char** argv)
 
     Date r16 ("6/7/2010 00:59:59", "m/d/Y H:N:S");
     t.notok (r14.sameHour (r16), "two dates not within the same hour");
+
+    // TODO Date::operator-
   }
 
   catch (std::string& e)