[Boost-commit] svn:boost r78447 - sandbox/type_erasure/libs/type_erasure/example

Subject: [Boost-commit] svn:boost r78447 - sandbox/type_erasure/libs/type_erasure/example
From: steven_at_[hidden]
Date: 2012-05-12 22:12:15

Author: steven_watanabe
Date: 2012-05-12 22:12:14 EDT (Sat, 12 May 2012)
New Revision: 78447
URL: http://svn.boost.org/trac/boost/changeset/78447

Log:
Fix bug in example.
Text files modified: 
   sandbox/type_erasure/libs/type_erasure/example/associated.cpp |     8 ++++++--                                
   1 files changed, 6 insertions(+), 2 deletions(-)

Modified: sandbox/type_erasure/libs/type_erasure/example/associated.cpp
==============================================================================
--- sandbox/type_erasure/libs/type_erasure/example/associated.cpp	(original)
+++ sandbox/type_erasure/libs/type_erasure/example/associated.cpp	2012-05-12 22:12:14 EDT (Sat, 12 May 2012)
@@ -31,7 +31,11 @@
 
     For example, we can define a concept for
     holding any iterator, raw pointer, or
-    smart pointer as follows:
+    smart pointer as follows.
+
+    Note the extra trickery to make sure that it is safe
+    to instantiate pointee with a placeholder, because
+    argument dependant lookup can cause spurious instantiations.
 */
 
 template<class T>
@@ -68,7 +72,7 @@
             typeid_<pointer<>::element_type>
         >
     > x(&i);
-    int j = boost::type_erasure::any_cast<int>(*x); // j == i
+    int j = any_cast<int>(*x); // j == i
     //]
 }