From 6eba933b63f22546cab1b9d98da4b28843c4981d Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Sat, 8 Jul 2023 00:21:13 -0600
Subject: [PATCH] Replace use of C-style array by std::array.

---
 .../vector_tools_constraints.templates.h        | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/include/deal.II/numerics/vector_tools_constraints.templates.h b/include/deal.II/numerics/vector_tools_constraints.templates.h
index 235392d05d..3fa96e5a78 100644
--- a/include/deal.II/numerics/vector_tools_constraints.templates.h
+++ b/include/deal.II/numerics/vector_tools_constraints.templates.h
@@ -38,7 +38,7 @@ namespace VectorTools
     template <int dim>
     struct VectorDoFTuple
     {
-      types::global_dof_index dof_indices[dim];
+      std::array<types::global_dof_index, dim> dof_indices;
 
       VectorDoFTuple()
       {
@@ -50,28 +50,19 @@ namespace VectorTools
       bool
       operator<(const VectorDoFTuple<dim> &other) const
       {
-        for (unsigned int i = 0; i < dim; ++i)
-          if (dof_indices[i] < other.dof_indices[i])
-            return true;
-          else if (dof_indices[i] > other.dof_indices[i])
-            return false;
-        return false;
+        return (dof_indices < other.dof_indices);
       }
 
       bool
       operator==(const VectorDoFTuple<dim> &other) const
       {
-        for (unsigned int i = 0; i < dim; ++i)
-          if (dof_indices[i] != other.dof_indices[i])
-            return false;
-
-        return true;
+        return (dof_indices == other.dof_indices);
       }
 
       bool
       operator!=(const VectorDoFTuple<dim> &other) const
       {
-        return !(*this == other);
+        return (dof_indices != other.dof_indices);
       }
     };
 
-- 
2.39.5