lib/ImmutableQueue.rb in maroon-0.7.1 vs lib/ImmutableQueue.rb in maroon-0.8.0

@@ -1,43 +1,32 @@
 class ImmutableQueue
-  def push(element)
-    b = (back or ImmutableStack.empty)
-    ImmutableQueue.new(front, b.push(element))
+      def push(element) b = (back or ImmutableStack.empty)
+ImmutableQueue.new(front, b.push(element))
+ end
+ def pop() f, b = front, back
+if (f == ImmutableStack.empty) then
+  until (b == ImmutableStack.empty) do
+    (e, b = b.pop
+    f = f.push(e))
   end
+end
+head, f = f.pop
+if (f == b) then
+  [head, ImmutableQueue.empty]
+else
+  [head, ImmutableQueue.new(f, b)]
+end
+ end
+ def self.empty() @empty ||= ImmutableQueue.new(ImmutableStack.empty, ImmutableStack.empty) end
+ def push_array(arr) q = self
+arr.each { |i| q = q.push(i) } if arr
+q
+ end
+     private
+def initialize(front,back) @front = (front or ImmutableStack.empty)
+@back = (back or ImmutableStack.empty)
+self.freeze
+ end
 
-  def pop()
-    f, b = front, back
-    if (f == ImmutableStack.empty) then
-      until (b == ImmutableStack.empty) do
-        (e, b = b.pop
-        f = f.push(e))
-      end
-    end
-    head, f = f.pop
-    if (f == b) then
-      [head, ImmutableQueue.empty]
-    else
-      [head, ImmutableQueue.new(f, b)]
-    end
-  end
+attr_reader :front, :back
 
-  def self.empty()
-    @@empty ||= ImmutableQueue.new(ImmutableStack.empty, ImmutableStack.empty)
-  end
-
-  def push_array(arr)
-    q = self
-    arr.each { |i| q = q.push(i) } if arr
-    q
-  end
-
-  private
-  def initialize(front, back)
-    @front = (front or ImmutableStack.empty)
-    @back = (back or ImmutableStack.empty)
-    self.freeze
-  end
-
-  attr_reader :front
-  attr_reader :back
-
-end
+           end
\ No newline at end of file