lib/promise.rb in promise-0.1.0 vs lib/promise.rb in promise-0.1.1

@@ -1,6 +1,5 @@
-
 ##
 # A delayed-execution promise.  Promises are only executed once.
 # @example
 #     x = promise { factorial 20 }
 #     y = promise { fibonacci 10**6 }
@@ -10,22 +9,22 @@
 # @example
 #     y = 5
 #     x = promise { y = y + 5 }
 #     x + 5     # => 15
 #     x + 5     # => 15
-class Promise
+class Promise < defined?(BasicObject) ? BasicObject : Object
 
-  instance_methods.each { |m| undef_method m unless m =~ /__/ }
+  instance_methods.each { |m| undef_method m unless m =~ /__|object_id/ } unless defined?(BasicObject)
 
   # Returns a new promise
   # @param [Proc] block
   # @return [Promise]
   def initialize(block)
     if block.arity > 0
       raise ArgumentError, "Cannot store a promise that requires an argument"
     end
     @block = block
-    @mutex = Mutex.new
+    @mutex = ::Mutex.new
   end
 
   # Force the evaluation of this promise immediately
   # @return [Any]
   def force