lib/head_music/consonance.rb in head_music-0.17.0 vs lib/head_music/consonance.rb in head_music-0.18.0

@@ -1,7 +1,10 @@
+# frozen_string_literal: true
+
+# Consonance is a description of intervals that sound more pleasing.
 class HeadMusic::Consonance
-  LEVELS = %w[perfect imperfect dissonant]
+  LEVELS = %w[perfect imperfect dissonant].freeze
 
   def self.get(name)
     @consonances ||= {}
     @consonances[name.to_sym] ||= new(name) if LEVELS.include?(name.to_s)
   end
@@ -13,10 +16,10 @@
   def initialize(name)
     @name = name.to_s.to_sym
   end
 
   def ==(other)
-    self.to_s == other.to_s
+    to_s == other.to_s
   end
 
   LEVELS.each do |method_name|
     define_method(:"#{method_name}?") { to_s == method_name }
   end