Make comparison operators const.

common/tool/selection.cpp

@@ -29,7 +29,7 @@
 #include <tool/selection.h>
 
 
-bool SELECTION::operator==( const SELECTION& aOther )
+bool SELECTION::operator==( const SELECTION& aOther ) const
 {
     return ( m_items == aOther.m_items
              && m_itemsOrders == aOther.m_itemsOrders

include/enum_vector.h

@@ -92,8 +92,8 @@ public:
     T operator*() { return static_cast<T>( val ); }
     ENUM_ITERATOR begin() { return *this; }
     ENUM_ITERATOR end() { return ENUM_ITERATOR( endVal ); }
-    bool operator==( const ENUM_ITERATOR& aIt ) { return val == aIt.val; }
-    bool operator!=( const ENUM_ITERATOR& aIt ) { return val != aIt.val; }
+    bool operator==( const ENUM_ITERATOR& aIt ) const { return val == aIt.val; }
+    bool operator!=( const ENUM_ITERATOR& aIt ) const { return val != aIt.val; }
 };
 
 #endif /* ENUM_VECTOR_H */

include/tool/selection.h

@@ -65,7 +65,7 @@ public:
         return *this;
     }
 
-    bool operator==( const SELECTION& aOther );
+    bool operator==( const SELECTION& aOther ) const;
 
     using ITER = std::deque<EDA_ITEM*>::iterator;
     using CITER = std::deque<EDA_ITEM*>::const_iterator;

pcbnew/dialogs/dialog_board_statistics.h

@@ -110,7 +110,7 @@ public:
         {
         }
 
-        bool operator==( const DRILL_LINE_ITEM& other )
+        bool operator==( const DRILL_LINE_ITEM& other ) const
         {
             return xSize == other.xSize && ySize == other.ySize && shape == other.shape
                    && isPlated == other.isPlated && isPad == other.isPad