Add missing qHash for older Qt versions

qgis · Dec 1, 2017 · 0fcbeb7 · 0fcbeb7
1 parent 8026008
commit 0fcbeb7
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diff --git a/src/core/qgsattributes.cpp b/src/core/qgsattributes.cpp
@@ -29,3 +29,11 @@ QgsAttributeMap QgsAttributes::toMap() const
   }
   return map;
 }
+
+uint qHash( const QgsAttributes &attributes )
+{
+  if ( attributes.isEmpty() )
+    return -1;
+  else
+    return qHash( attributes.at( 0 ) );
+}
diff --git a/src/core/qgsattributes.h b/src/core/qgsattributes.h
@@ -120,6 +120,10 @@ class CORE_EXPORT QgsAttributes : public QVector<QVariant>
 
     inline bool operator!=( const QgsAttributes &v ) const { return !( *this == v ); }
 };
+
+//! Hash for QgsAttributes
+CORE_EXPORT uint qHash( const QgsAttributes &attributes );
+
 #else
 typedef QVector<QVariant> QgsAttributes;