lib/funkr/categories/alternative.rb in funkr-0.0.23 vs lib/funkr/categories/alternative.rb in funkr-0.0.24

@@ -1,8 +1,12 @@
 module Funkr
   module Categories
+    
+    # Functors for which alternative (OR) behaviour can be defined
     module Alternative
       
+      # Provide an alternative. The type must be as follow :
+      #   Functor(A).or_else{ Functor(A) } : Functor(A)
       def or_else
         raise "Alternative#or_else not implemented"
       end
       
     end