From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Sun, 24 May 2020 14:45:35 +0000 (-0600)
Subject: C++14 updates to a couple of tutorials.
X-Git-Tag: v9.3.0-rc1~1568^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F10344%2Fhead;p=dealii.git

C++14 updates to a couple of tutorials.
---

diff --git a/examples/step-13/step-13.cc b/examples/step-13/step-13.cc
index dbd81a07f8..2a7c381349 100644
--- a/examples/step-13/step-13.cc
+++ b/examples/step-13/step-13.cc
@@ -1364,12 +1364,8 @@ namespace Step13
 
     // Create a solver object of the kind indicated by the argument to this
     // function. If the name is not recognized, throw an exception!
-    // The respective solver object is stored in a std::unique_ptr to avoid
-    // having to delete the pointer after use. For initializing, we want to use
-    // the C++14 function std::make_unique. Since deal.II only requires C++11 up
-    // to now, we define this function in a separate namespace called
-    // `std`. In case the compiler supports C++14, this just calls
-    // std::make_unique.
+    // The respective solver object is stored in a `std::unique_ptr` to avoid
+    // having to delete the pointer after use.
     std::unique_ptr<LaplaceSolver::Base<dim>> solver;
     if (solver_name == "global")
       solver = std::make_unique<LaplaceSolver::RefinementGlobal<dim>>(
diff --git a/examples/step-53/step-53.cc b/examples/step-53/step-53.cc
index c60f86b6f7..88943e5c00 100644
--- a/examples/step-53/step-53.cc
+++ b/examples/step-53/step-53.cc
@@ -221,12 +221,13 @@ namespace Step53
   }
 
 
-  // This function is required by the interface of the Manifold base class,
-  // and allows you to clone the AfricaGeometry class. This is where we use
-  // a C++14 feature, namely the make_unique function, that simplifies the
-  // creation of std::unique_ptr objects. Notice that, while the function
-  // returns a std::unique_ptr<Manifold<3,3>>, we internally create a
-  // unique_ptr<AfricaGeometry>.
+  // The next function is required by the interface of the
+  // Manifold base class, and allows cloning the AfricaGeometry
+  // class. Notice that, while the function returns a
+  // `std::unique_ptr<Manifold<3,3>>`, we internally create a
+  // `unique_ptr<AfricaGeometry>`. In other words, the library
+  // requires a pointer-to-base-class, which we provide by creating a
+  // pointer-to-derived-class.
   std::unique_ptr<Manifold<3, 3>> AfricaGeometry::clone() const
   {
     return std::make_unique<AfricaGeometry>();