From: Robert Dober <robert.dober@...>
Date: 2007-06-05T21:30:13+09:00
Subject: Re: Writing method "change!" for String

On 6/5/07, Mike <michaelst@gmail.com> wrote:
> Hi,
>
>    I'm trying to write simple method to change internal value of
> String class:
>
> class String
>     def change!
>         self="0" if self.downcase=="myvalue1"

>         self="1" if self.downcase=="myvalue2"
>         self
>     end
> end
>
class String
   def change!
       case downcase
          when "myvalue"
            replace("0")
         etc. etc.
> test="myvalue1"
> test.change!
> p test
>
> It should just change value of string to what I want. But I get error:
> "Can't change the value of self".
> How do I proceed?
>

HTH
Robert


-- 
You see things; and you say Why?
But I dream things that never were; and I say Why not?
-- George Bernard Shaw