Turn declarations into definitions in the example

Author: Endilll

source/templates.tex

@@ -151,16 +151,16 @@
 so all specializations of a template belong to the same scope as it does.
 \begin{example}
 \begin{codeblock}
-void f();
-class f;                                    // OK
+void f() {}
+class f {}                                      // OK
 namespace N {
-  void f(int);
+  void f(int) {}
 }
-using N::f;                                 // OK
-template<typename> void f(long);            // OK
-template<typename> void f(long);            // error: corresponding overload
-template<typename> void f(long long);       // OK
-template<>         void f<int>(long long);  // OK, doesn't bind a name
+using N::f;                                     // OK
+template<typename> void f(long) {}              // OK
+template<typename> void f(long) {}              // error: corresponding overload
+template<typename> void f(long long) {}         // OK
+template<>         void f<int>(long long) {}    // OK, doesn't bind a name
 \end{codeblock}
 \end{example}
 \end{note}