[Boost-commit] svn:boost r72678 - sandbox/conversion/libs/conversion_ext/example

Subject: [Boost-commit] svn:boost r72678 - sandbox/conversion/libs/conversion_ext/example
From: vicente.botet_at_[hidden]
Date: 2011-06-19 05:00:58

Author: viboes
Date: 2011-06-19 05:00:57 EDT (Sun, 19 Jun 2011)
New Revision: 72678
URL: http://svn.boost.org/trac/boost/changeset/72678

Log:
Conversion: Added some examples
Added:
   sandbox/conversion/libs/conversion_ext/example/even.cpp   (contents, props changed)
   sandbox/conversion/libs/conversion_ext/example/no_throw.cpp   (contents, props changed)
   sandbox/conversion/libs/conversion_ext/example/swap.cpp   (contents, props changed)

Added: sandbox/conversion/libs/conversion_ext/example/even.cpp
==============================================================================
--- (empty file)
+++ sandbox/conversion/libs/conversion_ext/example/even.cpp	2011-06-19 05:00:57 EDT (Sun, 19 Jun 2011)
@@ -0,0 +1,32 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Vicente J. Botet Escriba 2008-2009. Distributed under 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)
+//
+// See http://www.boost.org/libs/synchro for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//[EVEN_CPP
+
+    #include <boost/conversion/convert_to.hpp>
+    #include <iostream>
+    using namespace boost::conversion;
+
+    template <typename T>
+    bool is_even(T val)
+    {
+      return (convert_to<int>(val) % 2)==0;
+    }
+    int main()
+    {
+      if (is_even(2))
+        std::cout << "2 is even" << std::endl;
+      else
+        std::cout << "2 is odd" << std::endl;
+
+      return 0;
+    }
+
+//]

Added: sandbox/conversion/libs/conversion_ext/example/no_throw.cpp
==============================================================================
--- (empty file)
+++ sandbox/conversion/libs/conversion_ext/example/no_throw.cpp	2011-06-19 05:00:57 EDT (Sun, 19 Jun 2011)
@@ -0,0 +1,77 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Vicente J. Botet Escriba 2008-2009. Distributed under 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)
+//
+// See http://www.boost.org/libs/synchro for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//[NO_THROW_CPP
+
+#include <boost/conversion/include.hpp>
+#include <boost/conversion/std/string.hpp>
+#include <iostream>
+
+using boost::optional;
+using namespace boost::conversion;
+
+void try_catch_way()
+{
+  //[NO_THROW_CPP_TRY_CATCH_WAY
+  int t;
+  try
+  {
+    std::string str="not an int";
+    t = convert_to<int>(str);
+  } catch(...)
+  {
+    std::cout << " Not an integer" << std::endl;
+  }
+  //]
+}
+void try_convert_to_way()
+{
+  int t;
+  std::string str="not an int";
+  optional<int> optt =  try_convert_to<int>(str);
+  if (!optt)
+  {
+    std::cout << " Not an integer" << std::endl;
+  }
+}
+
+void convert_to_optional_way()
+{
+  int t;
+  std::string str="not an int";
+  optional<int> optt =  convert_to<optional<int> >(str);
+  if (!optt)
+  {
+    std::cout << " Not an integer" << std::endl;
+  }
+}
+
+void try_assign_to_way()
+{
+  int t;
+  std::string str="not an int";
+
+  if (!try_assign_to(t,str))
+  {
+    std::cout << " Not an integer" << std::endl;
+  }
+}
+
+int main()
+{
+  try_catch_way();
+  try_convert_to_way();
+  convert_to_optional_way();
+  try_assign_to_way();
+
+  return 0;
+}
+
+//]

Added: sandbox/conversion/libs/conversion_ext/example/swap.cpp
==============================================================================
--- (empty file)
+++ sandbox/conversion/libs/conversion_ext/example/swap.cpp	2011-06-19 05:00:57 EDT (Sun, 19 Jun 2011)
@@ -0,0 +1,42 @@
+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Vicente J. Botet Escriba 2008-2009. Distributed under 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)
+//
+// See http://www.boost.org/libs/synchro for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//[SWAP_CPP
+
+    #include <boost/conversion/assign_to.hpp>
+    #include <iostream>
+    using namespace boost::conversion;
+
+    template <typename T, typename U>
+    void swap_convertibles(T& t, U& u)
+    {
+      T tmp(t);
+      assign_to(t,u);
+      assign_to(u,tmp);
+    }
+    int main()
+    {
+      int i = 3;
+      float x = 2.5;
+
+      std::cout << "i= " << i << std::endl;
+      std::cout << "x= " << x << std::endl;
+
+#if defined(BOOST_CONVERSION_ENABLE_CND)
+      swap_convertibles(i, x);
+#endif
+
+      std::cout << "i= " << i << std::endl;
+      std::cout << "x= " << x << std::endl;
+      return 0;
+    }
+
+
+//]