lib/ImmutableStack.rb in maroon-0.6.5 vs lib/ImmutableStack.rb in maroon-0.7.0

@@ -1,38 +1,34 @@
 class ImmutableStack
-       
-def pop()
+  def pop()
     [@head, @tail]
- end
- 
-def push(element)
+  end
+
+  def push(element)
     ImmutableStack.new(element, self)
- end
- 
-def self.empty()
+  end
+
+  def self.empty()
     @@empty ||= self.new(nil, nil)
- end
- 
-def each()
+  end
+
+  def each()
     yield(head)
-t = tail
-while t.!=(ImmutableStack.empty) do
-  h, t = t.pop
-  yield(h)
-end
+    t = tail
+    while t.!=(ImmutableStack.empty) do
+      h, t = t.pop
+      yield(h)
+    end
+  end
 
- end
- 
-def initialize(h,t)
+  def initialize(h, t)
     @head = h
-@tail = t
-self.freeze
+    @tail = t
+    self.freeze
+  end
 
- end
+  private
+  attr_reader :head
+  attr_reader :tail
 
- private
-attr_reader :head
-      attr_reader :tail
-      
-    
-    
-      end
+
+end
\ No newline at end of file