From 0dcd46233fe3d7bcdcf7e8568758d997edb33e7b Mon Sep 17 00:00:00 2001
From: ruben <rubenperez038@gmail.com>
Date: Sat, 7 Dec 2019 21:40:39 +0000
Subject: [PATCH] Added operator== between rows and owning rows

---
 include/mysql/impl/container_equals.hpp |  6 +++---
 include/mysql/row.hpp                   | 16 ++++++++++++++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/include/mysql/impl/container_equals.hpp b/include/mysql/impl/container_equals.hpp
index 3a81bc6a..f206ea13 100644
--- a/include/mysql/impl/container_equals.hpp
+++ b/include/mysql/impl/container_equals.hpp
@@ -9,10 +9,10 @@ namespace mysql
 namespace detail
 {
 
-template <typename T>
+template <typename TLeft, typename TRight>
 inline bool container_equals(
-	const std::vector<T>& lhs,
-	const std::vector<T>& rhs
+	const std::vector<TLeft>& lhs,
+	const std::vector<TRight>& rhs
 )
 {
 	if (lhs.size() != rhs.size()) return false;
diff --git a/include/mysql/row.hpp b/include/mysql/row.hpp
index ddc66d70..29fa7282 100644
--- a/include/mysql/row.hpp
+++ b/include/mysql/row.hpp
@@ -43,11 +43,23 @@ public:
 inline bool operator==(const row& lhs, const row& rhs) { return lhs.values() == rhs.values(); }
 inline bool operator!=(const row& lhs, const row& rhs) { return !(lhs == rhs); }
 
-inline bool operator==(const std::vector<owning_row>& lhs, const std::vector<owning_row>& rhs)
+// Allow comparisons between vectors of rows and owning rows
+template <
+	typename RowTypeLeft,
+	typename RowTypeRight,
+	typename=std::enable_if_t<std::is_base_of_v<row, RowTypeLeft> && std::is_base_of_v<row, RowTypeRight>>
+>
+inline bool operator==(const std::vector<RowTypeLeft>& lhs, const std::vector<RowTypeRight>& rhs)
 {
 	return detail::container_equals(lhs, rhs);
 }
-inline bool operator!=(const std::vector<owning_row>& lhs, const std::vector<owning_row>& rhs)
+
+template <
+	typename RowTypeLeft,
+	typename RowTypeRight,
+	typename=std::enable_if_t<std::is_base_of_v<row, RowTypeLeft> && std::is_base_of_v<row, RowTypeRight>>
+>
+inline bool operator!=(const std::vector<RowTypeLeft>& lhs, const std::vector<RowTypeRight>& rhs)
 {
 	return !(lhs == rhs);
 }