Comparing Class Hierarchy Relationships
The comparator methods (
>, etc.) can be useful for a lot of things. In
Ruby, they can be used to compare classes in order to understand how they
relate to one another on the class hierarchy.
# Fixnum is a subclass of Integer > Fixnum < Integer => true # Integer is not a subclass of Fixnum > Integer < Fixnum => false # Fixnum and String are not related to one another > Fixnum < String => nil
< operator will tell you if there is a subclass relationship. The
operator will tell you if there is an ancestor relationship. When
results, it means the two classes do not have a direct relationship.
There are a few more of these types of operators on the Module class.Tweet