From 9f8ea49446ef106385ea5345f0f9fbf08383db45 Mon Sep 17 00:00:00 2001
From: Paul Beckingham <paul@beckingham.net>
Date: Sat, 26 Sep 2015 14:56:36 -0400
Subject: [PATCH] ISO8601d: Added ::operator<

---
 src/ISO8601.cpp | 6 ++++++
 src/ISO8601.h   | 1 +
 2 files changed, 7 insertions(+)

diff --git a/src/ISO8601.cpp b/src/ISO8601.cpp
index 89d29a489..c1fa548ce 100644
--- a/src/ISO8601.cpp
+++ b/src/ISO8601.cpp
@@ -1061,6 +1061,12 @@ bool ISO8601d::operator!= (const ISO8601d& rhs) const
   return rhs._date != _date;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+bool ISO8601d::operator<  (const ISO8601d& rhs) const
+{
+  return _date < rhs._date;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 void ISO8601p::clear ()
 {
diff --git a/src/ISO8601.h b/src/ISO8601.h
index b78087817..36f871774 100644
--- a/src/ISO8601.h
+++ b/src/ISO8601.h
@@ -67,6 +67,7 @@ public:
 
   bool operator== (const ISO8601d&) const;
   bool operator!= (const ISO8601d&) const;
+  bool operator<  (const ISO8601d&) const;
 
 private:
   void clear ();