Re: difference between class and object methods

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From	Robert Klemme <shortcutter@googlemail.com>
Newsgroups	comp.lang.ruby
Subject	Re: difference between class and object methods
Date	Tue, 31 Jan 2012 21:21:26 +0100
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On 31.01.2012 13:29, Sagy Drucker wrote:
> am i correct when i compare to java, and say:
> object methods in ruby are equivalent object methods in java
> and class methods in ruby are equivalent STATIC functions in java?
>
> also,
> class variables in ruby are equivalent to static variables in java?

Yep, that's mostly correct.  But you should rather not bother to use 
class variables (those prefixed with @@) but instead should only use 
instance variables of a class, e.g.

class X
   def self.a_class_method
     @@do_not_use_class_variables = 1
     @but_use_class_instance_variables = 2
   end
end

Reason is that class variables have weird scoping rules which can 
produce strange effects.

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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Thread

difference between class and object methods Sagy Drucker <sagysrael@gmail.com> - 2012-01-31 04:29 -0800
  Re: difference between class and object methods Robert Klemme <shortcutter@googlemail.com> - 2012-01-31 21:21 +0100
  Re: difference between class and object methods Rodrigo Kochenburger <divoxx@gmail.com> - 2012-02-01 07:41 -0800
  Re: difference between class and object methods Danny Woods <dannywoodz@yahoo.co.uk> - 2012-02-02 21:47 +0000
    Re: difference between class and object methods Alec Ross <alec@arlross.demon.co.uk> - 2012-02-03 11:51 +0000

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