diff --git a/src/cppcommon/io_functs.cpp b/src/cppcommon/io_functs.cpp
index f04a3bb..e966bb7 100644
--- a/src/cppcommon/io_functs.cpp
+++ b/src/cppcommon/io_functs.cpp
@@ -8,7 +8,7 @@ namespace CPPCOMMON
 {
 	string loadFile2Str(const char * const filepath)
 	{
-		ifstream in(filepath, ios::in);
+		ifstream in(filepath);
 		istreambuf_iterator<char> beg(in), end;
 		string str(beg, end);
 		in.close();
diff --git a/src/cppcommon/map_functs.h b/src/cppcommon/map_functs.h
index 833da38..6c8a411 100644
--- a/src/cppcommon/map_functs.h
+++ b/src/cppcommon/map_functs.h
@@ -1,18 +1,41 @@
 /************************************
  * file enc : ascii
  * author   : wuyanyi09@gmail.com
-************************************/
+ ************************************/
 
 
 #ifndef CPPCOMMON_MAP_FUNCTS_H
 #define CPPCOMMON_MAP_FUNCTS_H
 
-#define PRINT_MAPSS(mpss) \
-{\
-	for(map<string, string>::const_iterator it = mpss.begin(); it != mpss.end(); it++)\
-	{\
-		cout<<it->first<<' '<<it->second<<endl;\
-	}\
+#include <map>
+#include <iostream>
+
+namespace CPPCOMMON
+{
+	using namespace std;
+
+	
+	template<class kT, class vT>
+		void printMap(const map<kT, vT>& mp)
+		{
+			for(typename map<kT, vT>::const_iterator it = mp.begin(); it != mp.end(); it++)
+			{
+				cout<<it->first<<' '<<it->second<<endl;
+			}
+		}
+
+	template<class kT, class vT>
+		vT getMap(const map<kT, vT>& mp, const kT & key, const vT & defaultVal)
+		{
+			typename map<kT, vT>::const_iterator it;
+			it = mp.find(key);
+			if(mp.end() == it)
+			{
+				return defaultVal;
+			}
+			return it->second;
+		}
+
 }
 
 #endif