Tiny fixes after rehearsal of advanced course

Author: Sebastien Ponce

talk/basicconcepts/classenum.tex

@@ -112,7 +112,7 @@
       VehicleType t = CAR;
     \end{cppcode*}
     \columnbreak
-    \begin{cppcode*}{gobble=2}
+    \begin{cppcode*}{gobble=2,firstnumber=8}
       enum VehicleType
         : int { // C++11
         BIKE = 3,
@@ -139,7 +139,7 @@
     \item strong typing, no automatic conversion to int
     \end{itemize}
     \small
-    \begin{cppcode*}{}
+    \begin{cppcode*}{firstnumber=3}
       enum VType { Bus, Car }; enum Color { Red, Blue };
       VType t = Bus;
       if (t == Red) { /* We do enter */ }
@@ -210,7 +210,7 @@
     \end{cppcode*}
   \end{alertblock}
   \begin{exampleblock}{\cpp11}
-    \begin{cppcode*}{gobble=2}
+    \begin{cppcode*}{gobble=2,firstnumber=4}
       using myint = uint64_t;
       myint toto = 17;
       using pos = int[3];

talk/basicconcepts/control.tex

@@ -159,7 +159,7 @@
   \pause
   \begin{alertblock}{\cpp98}
     Don't confuse with a variable declaration as condition:
-    \begin{cppcode*}{}
+    \begin{cppcode*}{firstnumber=7}
       if (Value* val = GetValuePtr())
         f(*val);
     \end{cppcode*}
@@ -183,7 +183,7 @@
   \end{block}
   \pause
   \begin{exampleblock}{Practical example}
-    \begin{cppcode*}{}
+    \begin{cppcode*}{firstnumber=4}
       for(int i = 0, j = 0 ; i < 10 ; i++, j = i*i) {
         std::cout << i << "^2 is " << j << '\n';
       }
@@ -213,7 +213,7 @@
     \end{cppcode*}
   \end{block}
   \begin{exampleblock}{Example code}
-    \begin{cppcode*}{}
+    \begin{cppcode*}{firstnumber=4}
       int v[4] = {1,2,3,4};
       int sum = 0;
       for (int a : v) { sum += a; }
@@ -236,7 +236,7 @@
     \end{cppcode*}
   \end{alertblock}
   \begin{exampleblock}{\cpp20}
-    \begin{cppcode*}{}
+    \begin{cppcode*}{firstnumber=6}
       std::array data = {"hello", ",", "world"};
       for (std::size_t i = 0; auto& d : data) {
         std::cout << i++ << ' ' << d << '\n';

talk/basicconcepts/scopesnamespaces.tex

@@ -178,7 +178,7 @@
     \end{itemize}
   \end{block}
   \begin{alertblock}{Supersedes static}
-    \begin{cppcode*}{gobble=2}
+    \begin{cppcode*}{gobble=2,firstnumber=4}
       static int localVar; // equivalent C code
     \end{cppcode*}
   \end{alertblock}

talk/morelanguage/exceptions.tex

@@ -336,13 +336,13 @@
     \end{itemize}
   \end{block}
   \begin{block}{}
-    \begin{cppcode*}{gobble=2, linenos=false}
+    \begin{cppcode*}{gobble=2}
       constexpr bool callCannotThrow = noexcept(f());
       if constexpr (callCannotThrow) { ... }
     \end{cppcode*}
   \end{block}
   \begin{block}{}
-    \begin{cppcode*}{gobble=2, linenos=false}
+    \begin{cppcode*}{gobble=2,firstnumber=3}
       template <typename Function>
       void g(Function f) noexcept(noexcept(f())) {
         ...
@@ -394,7 +394,10 @@
       \item Return a \mintinline{cpp}{std::error_code} (\cpp11)
       \item If failing to produce a value is not a hard error, consider returning \mintinline{cpp}{std::optional<T>} (\cpp17)
       \item Return \mintinline{cpp}{std::expected<T, E>} (\cpp23), where \mintinline{cpp}{T} is the return type on success and \mintinline{cpp}{E} is the type on failure
-      \item Terminate the program, e.g.\ by calling \mintinline{cpp}{std::terminate()} or  \mintinline{cpp}{std::abort()}
+      \item Terminate the program
+        \begin{itemize}
+        \item e.g.\ by calling \mintinline{cpp}{std::terminate()} or \mintinline{cpp}{std::abort()}
+        \end{itemize}
       \item Contracts: Specify function pre- and postconditions. Planned for \cpp20, but removed. Will come back in the future
     \end{itemize}
   \end{block}

talk/objectorientation/typecasting.tex

@@ -25,23 +25,23 @@
   \small
   \begin{exampleblock}{}
     \begin{cppcode*}{gobble=2}
-      struct A{ virtual ~A()=default } a;
+      struct A{ virtual ~A()=default; } a;
       struct B : A {} b;
 
       A& c = static_cast<A&>(b); // OK. b is also an A
       B& d = static_cast<B&>(a); // UB: a is not a B
       B& e = static_cast<B&>(c); // OK. c is a B
 
       B& f = dynamic_cast<B&>(c); // OK, c is a B
-      B& g = dynamic_cast<B&>(a); // Exception: not a B
-
-      B* d = dynamic_cast<B*>(&a); // nullptr. a not a B.
-      if (d != nullptr) {
-        // Will not reach this
+      B& g = dynamic_cast<B&>(a); // throws std::bad_cast
+      B& foo(A& h) {
+        return dynamic_cast<B&>(h);
       }
+      B& i = foo(c); // OK, c is a B
 
-      if (auto bPtr = dynamic_cast<B*>(&c)) {
-        // OK, we will get here
+      B* j = dynamic_cast<B*>(&a); // nullptr. a not a B.
+      if (j != nullptr) {
+        // Will not reach this
       }
       \end{cppcode*}
   \end{exampleblock}