lib/coltrane/theory/pitch.rb in coltrane-3.2.0 vs lib/coltrane/theory/pitch.rb in coltrane-3.3.0

@@ -2,10 +2,11 @@
 
 module Coltrane
   module Theory
     # It describes a pitch, like E4 or Bb5. It's like a note, but it has an octave
     class Pitch
+      include Comparable
       attr_reader :integer
 
       def initialize(notation_arg = nil,
                      note: nil,
                      octave: nil,
@@ -25,9 +26,13 @@
         end
       end
 
       def self.[](*args)
         new *args
+      end
+
+      def <=>(other)
+        integer <=> other.integer
       end
 
       def scientific_notation
         "#{pitch_class}#{octave}"
       end