ENH: noexcept size_bytes() method for lists

- for use when the is_contiguous check has already been done outside
  the loop. Naming as per std::span.

STYLE: use data/cdata instead of begin

ENH: replace random_shuffle with shuffle, fix OSX int64 ambiguity

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/DelaunayMesh/DelaunayMesh.C

@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2012-2015 OpenFOAM Foundation
+    Copyright (C) 2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -33,6 +34,8 @@ License
 #include "scalarIOField.H"
 #include "labelIOField.H"
 #include "pointConversion.H"
+#include <algorithm>
+#include <random>
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
@@ -304,7 +307,7 @@ Foam::Map<Foam::label> Foam::DelaunayMesh<Triangulation>::rangeInsertWithInfo
         );
     }
 
-    std::random_shuffle(points.begin(), points.end());
+    std::shuffle(points.begin(), points.end(), std::default_random_engine());
 
     spatial_sort
     (

applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/DelaunayMesh/DistributedDelaunayMesh.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2012-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -33,6 +33,8 @@ License
 #include "pointConversion.H"
 #include "indexedVertexEnum.H"
 #include "IOmanip.H"
+#include <algorithm>
+#include <random>
 
 // * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * * //
 
@@ -880,7 +882,12 @@ Foam::DistributedDelaunayMesh<Triangulation>::rangeInsertReferredWithInfo
         );
     }
 
-    std::random_shuffle(pointsBbDistSqr.begin(), pointsBbDistSqr.end());
+    std::shuffle
+    (
+        pointsBbDistSqr.begin(),
+        pointsBbDistSqr.end(),
+        std::default_random_engine()
+    );
 
     // Sort in ascending order by the distance of the point from the centre
     // of the processor bounding box