Moved functors away from std_set.i and std_map.i

into their own std_functors.i file.
Made binarypredicate, etc. be templates to allow more
strict predicates/functors.




git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@9815 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Lib/ruby/std_functors.i

@@ -0,0 +1,29 @@
+/**
+ * @file   std_functors.i
+ * @date   Sun May  6 00:44:33 2007
+ * 
+ * @brief  This file provides unary and binary functors for STL
+ *         containers, that will invoke a Ruby proc or method to do
+ *         their operation.
+ *
+ *         You can use them in a swig file like:
+ *
+ *         %include <std_set.i>
+ *         %include <std_functors.i>
+ *
+ *         %template< IntSet > std::set< int, swig::BinaryPredicate<int> >;
+ *
+ *
+ *         which will then allow calling them from Ruby either like:
+ *  
+ *            # order of set is defined by C++ default
+ *            a = IntSet.new
+ *
+ *            # sort order defined by Ruby proc
+ *            b = IntSet.new( proc { |a,b| a > b } )
+ * 
+ */
+
+%include <rubystdfunctors.swg>
+
+%fragment("StdFunctors");