From e8a666b37f9ed4f64e6f1c25f07b38d326027b0c Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 27 Apr 2020 20:21:47 +0100
Subject: Remvoe some duplication in class registration

---
 slicer/slicer/modelPartsTypes.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/slicer/slicer/modelPartsTypes.cpp b/slicer/slicer/modelPartsTypes.cpp
index faad404..7d9ea54 100644
--- a/slicer/slicer/modelPartsTypes.cpp
+++ b/slicer/slicer/modelPartsTypes.cpp
@@ -5,11 +5,12 @@
 
 namespace Slicer {
 	using ClassRefMap = std::map<std::string, ClassRef, std::less<>>;
+	using ClassNamePair = std::pair<std::string, std::string>;
 	using ClassNameMap = boost::multi_index_container<
-		std::pair<std::string, std::string>,
+		ClassNamePair,
 		boost::multi_index::indexed_by<
-			boost::multi_index::ordered_unique<boost::multi_index::member<std::pair<std::string, std::string>, const std::string, &std::pair<std::string, std::string>::first>, std::less<>>,
-			boost::multi_index::ordered_unique<boost::multi_index::member<std::pair<std::string, std::string>, const std::string, &std::pair<std::string, std::string>::second>, std::less<>>
+			boost::multi_index::ordered_unique<boost::multi_index::member<ClassNamePair, const std::string, &ClassNamePair::first>, std::less<>>,
+			boost::multi_index::ordered_unique<boost::multi_index::member<ClassNamePair, const std::string, &ClassNamePair::second>, std::less<>>
 		>>;
 
 	static void createClassMaps() __attribute__((constructor(208)));
-- 
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