From: "Bartosz Dziewoński" <matma.rex@...>
Date: 2012-08-11T22:24:18+09:00
Subject: Re: Unable to print a block argument.

2012/8/11 Ja Tse <lists@ruby-forum.com>:
> Not sure how to put it just want to know, wat's the advantage of
> creating an object through a proxy method in this case #open vs just
> creating an object with the constructor Foo.new ?

It might be used if you would have to explicitly call some
"destructor" method on the object after you finish using it.

E.g. the block form of File.open:
  File.open(...){|f| do_stuff(f) }

... can be used instead of the longer and more error-prone (if you
forget to close the file):
  f = File.open(...)
  do_stuff(f)
  f.close

I don't think there is any advantage if there is no such "destructor"
method for your object.

-- Matma Rex