Added two examples of dealing with tuples

Grzegorz Jabłoński
1 parent 28f14253
Showing 1 changed file with 17 additions and 6 deletions
examples11/06-template_metaprogramming/testvector.cpp
@@ -14,13 +14,24 @@ int main() {
   a.push_back("5");
   a.push_back("6");
   a.push_back("7");
-  a.reserve(11); // to avoid reallocation and reference invalidation
-  auto [x, y, z] = a.push_back("8", "9", "10");
+  a.reserve(10); // to avoid reallocation and reference invalidation
+
+  std::tuple<string&, string&, string&> c = a.push_back("8", "9", "10");
+
   printvector(a);
-  x = "108";
-  y = "109";
-  z = "110";
-  string arg = "11";
+
+  get<0>(c) = "108";
+  get<1>(c) = "109";
+  get<2>(c) = "110";
+
+  printvector(a);
+
+  a.reserve(12);
+  auto [x, y] = a.push_back("11", "12");
+  x = "111";
+  y = "112";
+
+  string arg = "13";
   a.push_back(arg);
   b = a;
   printvector(b);