From: Wyss Clemens <WYS@...>
Date: 2001-03-03T01:11:46+09:00
Subject: [ruby-talk:11902] Class Destructor?

How about using define_finalizer in your initialize method. 
Read:
http://www.ruby.ch/ProgrammingRuby/htmlC/ref_m_kernel.html#exit   or
http://www.ruby.ch/ProgrammingRuby/htmlC/ref_m_objectspace.html#define_final
izer

Clemens

> -----Urspr�ngliche Nachricht-----
> Von: Jim Freeze [mailto:jim@freeze.org]
> Gesendet am: Freitag, 2. M�rz 2001 16:54
> An: ruby-talk@ruby-lang.org
> Betreff: [ruby-talk:11901] Class Destructor?
> 
> I have a class where the initializer takes a filename
> and opens a file. The class has several methods to let
> the user get information from the file.
> 
> 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)
> 
> I see 2 options:
> 
> 1) Put the burden on the user with #begin #end
> 
> begin
>   c = Myclass.new("file")
>   c.meth1
>   c.meth2
> 
>   ensure
>     c.close
> end
> 
> 
> 2) Or I could store the file pointer in the class and
> have each method open the file, move to the proper location,
> do its thing, save the file pointer, close the file.
> But this seems kind of kludgy.
> 
> 
> Any other ideas out there?
> 
> Thanks
> 
> 
> 
> =========================================================
> Jim Freeze
> jim@freeze.org
> ---------------------------------------------------------
> "So, it should be relatively easy ... this is the phrase
> I use when someone else is the most obvious person to do
> something."
>       Harry Ohlsen
> =========================================================
>