From: Mike <michaelst@...>
Date: 2007-06-05T21:20:07+09:00
Subject: Writing method "change!" for String

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

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?

Thanks.