Resource allocation/deallocation (cont'd)

 1   # Method 2: Use blocks (like C++''s RAII)
 2   class Foo
 3     def initialize()
 4       @x = allocate_some_resource
 5     end
 6 
 7     def finalize()
 8       deallocate_some_resource(@x)
 9     end
10 
11     def self.with
12       foo = Foo.new
13       begin
14         yield
15       ensure
16         foo.finalize
17       end
18     end
19   end