From: Dave Thomas <Dave@...>
Date: 2001-03-03T01:21:27+09:00
Subject: [ruby-talk:11904] Re: Class Destructor?

Jim Freeze <jim@freeze.org> writes:

> The problem is, I don't know how to have the class
> close the file automatically like a destructor would 
> in C++. (Maybe I have missed something big here)

One trick, if you have fairly localized access to the file, is to use
a block

  MyClass.open("file") do |c|
     c.meth1
     c.meth2
  end

where ::open is something like

  class MyClass    # untried
    def MyClass.open(file)
      File.open(file) do |@f|
        yield self
      end
    end
    def meth1
       @f.read..  # or whatever
  end


Dave