Removed use of std::unary_function from docs example.

Lastique · Lastique · commit c89e2b325a8f · 2025-02-07T13:46:19.000+03:00
diff --git a/doc/quickbook/zip_iterator.qbk b/doc/quickbook/zip_iterator.qbk
@@ -52,9 +52,10 @@ These two iterations can now be replaced with a single one as follows:
 A non-generic implementation of `zip_func` could look as follows:
 
 
-      struct zip_func :
-        public std::unary_function<const boost::tuple<const double&, const int&>&, void>
+      struct zip_func
       {
+        using result_type = void;
+
         void operator()(const boost::tuple<const double&, const int&>& t) const
         {
           m_f0(t.get<0>());

Original file line number	Diff line number	Diff line change
`@@ -52,9 +52,10 @@ These two iterations can now be replaced with a single one as follows:`
`52`	`52`	A non-generic implementation of `zip_func` could look as follows:
`53`	`53`
`54`	`54`
`55`		`- struct zip_func :`
`56`		`- public std::unary_function<const boost::tuple<const double&, const int&>&, void>`
	`55`	`+ struct zip_func`
`57`	`56`	`{`
	`57`	`+ using result_type = void;`
	`58`	`+`
`58`	`59`	`void operator()(const boost::tuple<const double&, const int&>& t) const`
`59`	`60`	`{`
`60`	`61`	`m_f0(t.get<0>());`