From 7786d32ba580c4aebeab00e5ed1454f65c137773 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Mon, 20 Feb 2017 18:10:26 +1100
Subject: [PATCH] view: add inequality operator

---
 view.cpp | 2 ++
 view.hpp | 3 +++
 view.ipp | 9 +++++++++
 3 files changed, 14 insertions(+)

diff --git a/view.cpp b/view.cpp
index aea0db83..40d011dd 100644
--- a/view.cpp
+++ b/view.cpp
@@ -31,6 +31,7 @@ util::operator== (A a, B b)             \
 }
 
 
+//-----------------------------------------------------------------------------
 EQUALITY(const std::string&, view<const char*>)
 EQUALITY(const std::string&, view<char*>)
 EQUALITY(const std::string&, view<std::string::const_iterator>)
@@ -43,6 +44,7 @@ EQUALITY(view<std::string::iterator>, const std::string&)
 
 #undef EQUALITY
 
+
 ///////////////////////////////////////////////////////////////////////////////
 namespace util {
 #define OSTREAM(A)                                                          \
diff --git a/view.hpp b/view.hpp
index ca6fb705..a9d28b23 100644
--- a/view.hpp
+++ b/view.hpp
@@ -79,6 +79,9 @@ namespace util {
     auto
     make_cview (const T&);
 
+    template <typename T>
+    bool operator!= (view<T>, view<T>);
+
     bool operator== (const std::string&, view<const char*>);
     bool operator== (const std::string&, view<char*>);
     bool operator== (const std::string&, view<std::string::const_iterator>);
diff --git a/view.ipp b/view.ipp
index 1c0b75e8..a14691df 100644
--- a/view.ipp
+++ b/view.ipp
@@ -170,6 +170,15 @@ util::view<T>::operator== (const view<T> rhs) const noexcept
 }
 
 
+//-----------------------------------------------------------------------------
+template <typename T>
+bool
+util::operator!= (const view<T> a, const view<T> b)
+{
+    return !(a == b);
+}
+
+
 ///////////////////////////////////////////////////////////////////////////////
 template <typename T, size_t N>
 auto