Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/boost/libs/signals2/example/ordering_slots.cpp b/src/boost/libs/signals2/example/ordering_slots.cpp
new file mode 100644
index 00000000..f69bc182
--- /dev/null
+++ b/src/boost/libs/signals2/example/ordering_slots.cpp
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+// Ordered slots hello world example for Boost.Signals2
+// Copyright Douglas Gregor 2001-2004.
+// Copyright Frank Mori Hess 2009.
+//
+// Use, modification and
+// distribution is subject to the Boost Software License, Version
+// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// For more information, see http://www.boost.org
+
+#include <iostream>
+#include <boost/signals2/signal.hpp>
+
+struct Hello
+{
+  void operator()() const
+  {
+    std::cout << "Hello";
+  }
+};
+
+struct World
+{
+  void operator()() const
+  {
+    std::cout << ", World!" << std::endl;
+  }
+};
+
+//[ good_morning_def_code_snippet
+struct GoodMorning
+{
+  void operator()() const
+  {
+    std::cout << "... and good morning!" << std::endl;
+  }
+};
+//]
+
+int main()
+{
+//[ hello_world_ordered_code_snippet
+  boost::signals2::signal<void ()> sig;
+
+  sig.connect(1, World());  // connect with group 1
+  sig.connect(0, Hello());  // connect with group 0
+//]
+
+//[ hello_world_ordered_invoke_code_snippet
+  // by default slots are connected at the end of the slot list
+  sig.connect(GoodMorning());
+
+  // slots are invoked this order:
+  // 1) ungrouped slots connected with boost::signals2::at_front
+  // 2) grouped slots according to ordering of their groups
+  // 3) ungrouped slots connected with boost::signals2::at_back
+  sig();
+//]
+
+  return 0;
+}
+