Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.ruby > #3016

Re: What do you do when you need to attach data to an object instance?

From Kevin Mahler <kevin.mahler@yahoo.com>
Newsgroups comp.lang.ruby
Subject Re: What do you do when you need to attach data to an object instance?
Date 2011-04-16 12:53 -0500
Organization Service de news de lacave.net
Message-ID <1d1ebc367f9cde56225d927c8cbf0b4b@ruby-forum.com> (permalink)
References (3 earlier) <BANLkTinGsu4_yM51dETQBgrN4c4enz1FaA@mail.gmail.com> <ebf5e68c050f1d14ab1e4188d6d392c2@ruby-forum.com> <d96516e82c6c2b2d395098f86cf62bc2@ruby-forum.com> <41c1bcee810455547ca7d7844c1113d2@ruby-forum.com> <7b5e8d93ddba3dc3daa51fd319e3d800@ruby-forum.com>

Show all headers | View raw


7stud
>> Because module_eval and class_eval are aliases, class_eval can be
>> called on a module, a situation which is at worst wrong
>
>It certainly isn't "wrong"--ruby allows it.

Wrong is not synonymous with illegal. One could easily argue that the
alias is a mistake. class_eval, as the name suggests, should have been
a more restricted version of module_eval. Allowing class_eval to have
a module receiver is wrong because a module is not a class. I
presented this as the "at worst" case--one end of the spectrum.

>> and at best
>> confusing. module_eval can never be wrong or confusing. Not a hard
>> choice.
>
>I thought using module_eval was confusing in your code, and that was why
>I suggested class_eval().

A class is a module.

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

Back to comp.lang.ruby | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

What do you do when you need to attach data to an object instance? "Aaron D. Gifford" <astounding@gmail.com> - 2011-04-14 14:47 -0500
  Re: What do you do when you need to attach data to an object instance? Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-14 16:11 -0500
    Re: What do you do when you need to attach data to an object instance? "Aaron D. Gifford" <astounding@gmail.com> - 2011-04-14 17:33 -0500
      Re: What do you do when you need to attach data to an object instance? "Aaron D. Gifford" <astounding@gmail.com> - 2011-04-14 18:45 -0500
        Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-14 19:50 -0500
        Re: What do you do when you need to attach data to an object instance? Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-14 20:07 -0500
          Re: What do you do when you need to attach data to an object instance? "Aaron D. Gifford" <astounding@gmail.com> - 2011-04-15 01:35 -0500
            Re: What do you do when you need to attach data to an object instance? Robert Klemme <shortcutter@googlemail.com> - 2011-04-15 03:46 -0500
              Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-15 13:40 -0500
                Re: What do you do when you need to attach data to an object   instance? Robert Klemme <shortcutter@googlemail.com> - 2011-04-15 21:00 +0200
          Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-15 18:10 -0500
            Re: What do you do when you need to attach data to an object instance? Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-16 10:32 -0500
              Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-16 12:14 -0500
                Re: What do you do when you need to attach data to an object instance? Kevin Mahler <kevin.mahler@yahoo.com> - 2011-04-16 12:53 -0500
                Re: What do you do when you need to attach data to an object instance? Adam Prescott <adam@aprescott.com> - 2011-04-18 07:10 -0500
  Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-14 18:15 -0500
  Re: What do you do when you need to attach data to an object instance? 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-14 19:01 -0500

csiph-web