I needed the item count of a pointer and was wondering if there is method for that. 

To figure out that it doesn't exist I had to browse through related files like abstract/01_pointer.rb,  type/pointer.rb, all/collection.rb and to be absolutely sure that it's not hidden in some other all set I had to go to the console and call all reasonable name variations for a count method on a pointer card. In an ideal world this page should tell me http://www.rubydoc.info/gems/card/Card/Set/Type/Pointer but not even the #item_names method is there because it's defined in an all set.