[Boost-commit] svn:boost r65917 - sandbox/variadic_templates/boost/composite_storage

Subject: [Boost-commit] svn:boost r65917 - sandbox/variadic_templates/boost/composite_storage
From: cppljevans_at_[hidden]
Date: 2010-10-11 18:56:10

Author: cppljevans
Date: 2010-10-11 18:56:08 EDT (Mon, 11 Oct 2010)
New Revision: 65917
URL: http://svn.boost.org/trac/boost/changeset/65917

Log:
Add comment about monoidal catetory.

Text files modified: 
   sandbox/variadic_templates/boost/composite_storage/special_components.hpp |    12 ++++++++++++                            
   1 files changed, 12 insertions(+), 0 deletions(-)

Modified: sandbox/variadic_templates/boost/composite_storage/special_components.hpp
==============================================================================
--- sandbox/variadic_templates/boost/composite_storage/special_components.hpp	(original)
+++ sandbox/variadic_templates/boost/composite_storage/special_components.hpp	2010-10-11 18:56:08 EDT (Mon, 11 Oct 2010)
@@ -9,6 +9,18 @@
 namespace special_components
 {
     enum special_id
+    //2010-10-11.1748CST
+    //  Maybe there should be enum's, e.g.
+    //    one
+    //    zero  
+    //  designating the unit for all_of_aligned 
+    //  and the unit for  one_of_maybe 
+    //  corresponding to the 
+    //  product's unit and the coproduct's unit 
+    //  as described here:
+    //
+    //    http://en.wikipedia.org/wiki/Monoidal_category
+    //
     { nothing_id //signifies error, something like haskell's Nothing.
     , empty_id //signifies empty class.
     };