diff --git a/include/fc/array.hpp b/include/fc/array.hpp
index cae423f..b465b59 100644
--- a/include/fc/array.hpp
+++ b/include/fc/array.hpp
@@ -117,8 +117,6 @@ namespace fc {
 #include <fc/crypto/city.hpp>
 namespace std
 {
-    template<typename T> struct hash;
-
     template<typename T, size_t N>
     struct hash<fc::array<T,N> >
     {
diff --git a/include/fc/crypto/ripemd160.hpp b/include/fc/crypto/ripemd160.hpp
index 9816fe4..5cf404d 100644
--- a/include/fc/crypto/ripemd160.hpp
+++ b/include/fc/crypto/ripemd160.hpp
@@ -79,8 +79,6 @@ class ripemd160
 
 namespace std
 {
-    template<typename T> struct hash;
-
     template<>
     struct hash<fc::ripemd160>
     {
diff --git a/include/fc/crypto/sha1.hpp b/include/fc/crypto/sha1.hpp
index 991ae57..62d077c 100644
--- a/include/fc/crypto/sha1.hpp
+++ b/include/fc/crypto/sha1.hpp
@@ -72,8 +72,6 @@ class sha1
 
 namespace std
 {
-    template<typename T> struct hash;
-
     template<>
     struct hash<fc::sha1>
     {
diff --git a/include/fc/crypto/sha224.hpp b/include/fc/crypto/sha224.hpp
index 26fd51b..a7ed1ae 100644
--- a/include/fc/crypto/sha224.hpp
+++ b/include/fc/crypto/sha224.hpp
@@ -73,8 +73,6 @@ class sha224
 } // fc
 namespace std
 {
-    template<typename T> struct hash;
-
     template<>
     struct hash<fc::sha224>
     {
diff --git a/include/fc/io/enum_type.hpp b/include/fc/io/enum_type.hpp
index c4bb024..2127ac2 100644
--- a/include/fc/io/enum_type.hpp
+++ b/include/fc/io/enum_type.hpp
@@ -23,8 +23,8 @@ namespace fc
       
       enum_type& operator=( IntType i )  { value = (EnumType)i; return *this;}
       enum_type& operator=( EnumType i ) { value = i; return *this;}
-      bool       operator<( EnumType i ) { return value < i; }
-      bool       operator>( EnumType i ) { return value < i; }
+      bool       operator<( EnumType i ) const { return value < i; }
+      bool       operator>( EnumType i ) const { return value < i; }
 
       bool operator<(const enum_type& e) const { return value < e.value;}
       bool operator>(const enum_type& e) const { return value > e.value;}
diff --git a/include/fc/network/endpoint.hpp b/include/fc/network/endpoint.hpp
deleted file mode 100644
index f1805f3..0000000
--- a/include/fc/network/endpoint.hpp
+++ /dev/null
@@ -1,37 +0,0 @@
-#pragma once
-#include <fc/string.hpp>
-
-namespace fc {
-
-  namespace ip {
-    class address {
-      public:
-        address( uint32_t _ip = 0 );
-        address( const fc::string& s );
-
-
-        address& operator=( const fc::string& s );
-        operator fc::string()const;
-
-        uint32_t ip()const { return _ip; }
-
-
-      private:
-        uint32_t _ip;
-    };
-    
-    class endpoint {
-      public:
-        endpoint();
-        endpoint( const fc::string& i, uint16_t p );
-        endpoint( const address& i,    uint16_t p );
-
-        uint16_t        port()const        { return _port; }
-        fc::ip::address get_address()const { return _ip;   }
-    
-      private:
-        uint16_t _port;
-        address  _ip;
-    };
-  }
-}
diff --git a/include/fc/network/ip.hpp b/include/fc/network/ip.hpp
index 900c89a..60b95d7 100644
--- a/include/fc/network/ip.hpp
+++ b/include/fc/network/ip.hpp
@@ -112,8 +112,6 @@ namespace fc {
 }
 namespace std
 {
-    template<typename T> struct hash;
-
     template<>
     struct hash<fc::ip::endpoint>
     {
diff --git a/include/fc/time.hpp b/include/fc/time.hpp
index 4f2ce25..98e76dc 100644
--- a/include/fc/time.hpp
+++ b/include/fc/time.hpp
@@ -36,7 +36,7 @@ namespace fc {
         explicit time_point( microseconds e = microseconds() ) :elapsed(e){}
         static time_point now();
         static time_point maximum() { return time_point( microseconds::maximum() ); }
-        static time_point (min)() { return time_point();                      }
+        static time_point min() { return time_point();                      }
         operator fc::string()const;
   
         static time_point from_iso_string( const fc::string& s );
@@ -48,10 +48,10 @@ namespace fc {
         bool   operator <=( const time_point& t )const                              { return elapsed._count <=t.elapsed._count; }
         bool   operator ==( const time_point& t )const                              { return elapsed._count ==t.elapsed._count; }
         bool   operator !=( const time_point& t )const                              { return elapsed._count !=t.elapsed._count; }
-        time_point&  operator += ( const microseconds& m )                          { elapsed+=m; return *this;               }
-        friend time_point   operator + ( const time_point& t, const microseconds& m ) { return time_point(t.elapsed+m);         }
-        friend time_point   operator - ( const time_point& t, const microseconds& m ) { return time_point(t.elapsed-m);         }
-        friend microseconds operator - ( const time_point& t, const time_point& m )   { return microseconds(t.elapsed.count() - m.elapsed.count()); }
+        time_point&  operator += ( const microseconds& m)                          { elapsed+=m; return *this;               }
+        time_point   operator + (const microseconds& m) const { return time_point(elapsed+m); }
+        time_point   operator - (const microseconds& m) const { return time_point(elapsed-m); }
+        microseconds operator - (const time_point& m) const { return microseconds(elapsed.count() - m.elapsed.count()); }
     private:
         microseconds elapsed; 
   };
diff --git a/include/fc/uint128.hpp b/include/fc/uint128.hpp
index aab14f2..5375b4d 100644
--- a/include/fc/uint128.hpp
+++ b/include/fc/uint128.hpp
@@ -104,8 +104,6 @@ namespace fc
 
 namespace std
 {
-    template<typename T> struct hash;
-
     template<>
     struct hash<fc::uint128>
     {