lib/sycamore/nothing.rb in metaractor-sycamore-0.4.2 vs lib/sycamore/nothing.rb in metaractor-sycamore-0.4.3

@@ -1,9 +1,8 @@
-require 'singleton'
+require "singleton"
 
 module Sycamore
-
   ##
   # The Nothing Tree singleton class.
   #
   # The Nothing Tree is an empty Sycamore Tree, and means "there are no nodes".
   #
@@ -41,11 +40,11 @@
     ########################################################################
 
     # TODO: YARD should be informed about this method definitions.
     command_methods.each do |command_method|
       define_method command_method do |*args|
-        raise NothingMutation, 'attempt to change the Nothing tree'
+        raise NothingMutation, "attempt to change the Nothing tree"
       end
     end
 
     # TODO: YARD should be informed about this method definitions.
     pure_destructive_command_methods.each do |command_method|
@@ -64,20 +63,20 @@
     # A string representation of the Nothing tree.
     #
     # @return [String]
     #
     def to_s
-      'Tree[Nothing]'
+      "Tree[Nothing]"
     end
 
     ##
     # A developer-friendly string representation of the Nothing tree.
     #
     # @return [String]
     #
     def inspect
-      '#<Sycamore::Nothing>'
+      "#<Sycamore::Nothing>"
     end
 
     def freeze
       super
     end
@@ -93,11 +92,10 @@
     #
     def ==(other)
       (other.is_a?(Tree) or other.is_a?(Absence)) and other.empty?
     end
 
-
     ########################################################################
     # Falsiness
     #
     # Sadly, in Ruby we can't do that match to reach this goal.
     #
@@ -117,11 +115,10 @@
 
     # def nil?
     #   true
     # end
 
-
     ########################################################################
     # Some helpers
     #
     # Ideally these would be implemented with Refinements, but since they
     # aren't available anywhere (I'm looking at you, JRuby), we have to be
@@ -137,21 +134,19 @@
     # @api private
     class NestedStringPresentation
       include Singleton
 
       def inspect
-        'n/a'
+        "n/a"
       end
     end
 
     ##
     # @api private
     NestedString = NestedStringPresentation.instance.freeze
-
   end
 
   ############################################################################
   # The Nothing Tree Singleton object
   #
   Nothing = NothingTree.instance.freeze
-
 end