Re:Facebook is using D in production starting today
by mratzloff on Saturday October 12, 2013 @10:57AM
(#6538921)
My preferred method of handling this is how Ruby does it with, e.g., File.open. The function yields the file handle and then closes it once the supplied block (think lambda function) ends. This is similar to what you refer to, but without the class. The class is useful for heap objects, of course.
Note that if your language supports RAII and lambdas (e.g. C++11), it's trivial to implement defer using a class that takes a function as an argument to its constructor and calls that function in its destructor. So you can still have the flexibility of defer in a language with RAII.