Merge pull request #12982 from peterrum/CollectionIterator_trait

Add iterator traits to hp::CollectionIterator
dealii · Nov 23, 2021 · 8c21111 · 8c21111
2 parents fb4e37e + ee17381
commit 8c21111
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/include/deal.II/hp/collection.h b/include/deal.II/hp/collection.h
@@ -293,4 +293,18 @@ namespace hp
 
 DEAL_II_NAMESPACE_CLOSE
 
+namespace std
+{
+  /**
+   * Iterator traits for hp::CollectionIterator.
+   */
+  template <class T>
+  struct iterator_traits<dealii::hp::CollectionIterator<T>>
+  {
+    using iterator_category = random_access_iterator_tag;
+    using value_type        = T;
+    using difference_type   = std::ptrdiff_t;
+  };
+} // namespace std
+
 #endif