From 3483416e5a3e4137d481977763c40915dc7e6b06 Mon Sep 17 00:00:00 2001
From: laplaceyang <laplace2013@outlook.com>
Date: Thu, 8 Dec 2016 20:46:52 +0800
Subject: [PATCH] addd operator[] and at function

---
 zmq_addon.hpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/zmq_addon.hpp b/zmq_addon.hpp
index 43c7d3b..33b0683 100644
--- a/zmq_addon.hpp
+++ b/zmq_addon.hpp
@@ -93,6 +93,26 @@ public:
         clear();
     }
 
+    message_t& operator[] (size_t n)
+    {
+        return m_parts[n];
+    }
+
+    const message_t& operator[] (size_t n) const
+    {
+        return m_parts[n];
+    }
+
+    message_t& at (size_t n)
+    {
+        return m_parts.at(n);
+    }
+
+    const message_t& at (size_t n) const
+    {
+        return m_parts.at(n);
+    }
+
     // Delete all parts
     void clear()
     {