From: Ilan Berci <coder68@...>
Date: 2006-12-15T01:56:51+09:00
Subject: Re:

Maksim,

I am not sure what you are trying to accomplish with the code below but 
I will go through line by line and let you know what each method will 
return to try to give you a better picture,

Maksim Bartenev wrote:

> Here's the actual code:
> 
> class Parent
> 
>   def dummy
>     "dummy"
>   end

This method simply returns a string of "dummy"

> 
>   def dummy=(arg)
>     puts 'weird stuff'
>     "dummy="
>   end
> 

This method entitled "dummy=" will NOT assign anything to anything and 
although it looks like a mutator, it isn't.  It will simply print 'weird 
stuff' and return a string: dummy=

>   def set_dummy(arg)
>     "set_dummy"
>   end
> 

Once again, this method appears to be affecting state, but it isn't.  It 
simply returns a string: "set_dummy"

> 
> class Child < Parent
> 
>   def try_dummy1
>     puts(dummy)
>   end

Calling this will print out: dummy as it will call Parent.dummy() which 
returns a string: dummy

> 
>   def try_dummy2
>     puts(dummy = true)
>   end

This will call out Parent.dummy=() which prints out: weird stuff and 
then returns the string: dummy= which is then printed out by this 
method.  It's important to note, that once again no assignment is taking 
place here whatsoever, Is that what you are confused on?

> 
>   def try_dummy3
>     puts(set_dummy(true))
>   end
> 

This method will call out Parent.set_dummy() which returns a string: 
set_dummy which this method then prints out..

I hope this has clarified some of your questions.  I believe you are 
misusing string quotation marks but once again I am unsure of what you 
are trying to accomplish.

ilan

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