Re: looking for an "inversion" pattern

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From	Fearless Fool <r@alum.mit.edu>
Newsgroups	comp.lang.ruby
Subject	Re: looking for an "inversion" pattern
Date	Fri, 15 Apr 2011 10:40:45 -0500
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Thanks everybody!!

@Jesús:

I like your suggestion.  It is simple and does what I'm looking for.

@Robert K:
> I am sorry, I still do not understand your motivation to have a class
> method which receives an instance as first argument.

My motivation is that I was writing a lot of code like this:

module HasXattr
    def xattr_reference(key);  Xattr.xattr_reference(self, key); end
    def xattr_store(key, value); Xattr.xattr_store(self, key, value); 
end
    def xattr_has_key?(key); Xattr.xattr_has_key?(self, key); end
    def xattr_delete(key); Xattr.xattr_delete(self, key); end
    ...
end

.. and I thought to myself: this is Ruby.  There must be a better way. 
I guess I should have shown this concrete example earlier in the thread.

@Kevin:
> One of the problems with Ruby is that the syntax changes depending on
> the compile-time or run-time context, which is a totally arbitrary
> distinction.

As I said, I came from a scheme background where everything was 
syntactically simple and life was simple.   Ah, for those days.  I guess 
I should have said "that's mighty fine Ruby-fu", since your 
understanding of Ruby far outstrips mine.

Again, thanks all...

- ff

-- 
Posted via http://www.ruby-forum.com/.

Thread

looking for an "inversion" pattern Fearless Fool <r@alum.mit.edu> - 2011-04-15 00:16 -0500
  Re: looking for an "inversion" pattern Fearless Fool <r@alum.mit.edu> - 2011-04-15 01:27 -0500
    Re: looking for an "inversion" pattern Robert Klemme <shortcutter@googlemail.com> - 2011-04-15 04:24 -0500
      Re: looking for an "inversion" pattern Fearless Fool <r@alum.mit.edu> - 2011-04-15 10:40 -0500
        Re: looking for an "inversion" pattern Robert Klemme <shortcutter@googlemail.com> - 2011-04-16 15:29 +0200
  Re: looking for an "inversion" pattern Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-15 02:14 -0500
    Re: looking for an "inversion" pattern Fearless Fool <r@alum.mit.edu> - 2011-04-15 02:43 -0500
      Re: looking for an "inversion" pattern Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-15 08:44 -0500
    Re: looking for an "inversion" pattern 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-16 13:20 -0500
      Re: looking for an "inversion" pattern 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-16 13:43 -0500
  Re: looking for an "inversion" pattern Jesús Gabriel y Galán <jgabrielygalan@gmail.com> - 2011-04-15 02:45 -0500
  Re: looking for an "inversion" pattern Brian Candler <b.candler@pobox.com> - 2011-04-16 16:14 -0500
    Re: looking for an "inversion" pattern Robert Klemme <shortcutter@googlemail.com> - 2011-04-16 23:40 +0200

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