From: Jason Lillywhite <jason.lillywhite@...>
Date: 2008-08-14T05:05:58+09:00
Subject: Re: changing an instance variable

Sebastian Hungerecker wrote:
> Jason Lillywhite wrote:
>> What if I want to redefine @x inside method "foo" but only in there?
> 
> Why?
> 

The reason is because I have big, long algorithms inside these methods 
'foo' and 'bar' and I don't want to re-write "@z = @x + @y" when I get 
to method 'bar'. I need to evaluate the function inside 'bar' with all 
the same variables except for @x. that one variable needs to be 
different when I run bar. Maybe I have to do this:

def initialize(x, y)
  @x, @y = x, y
end

def foo
  @z = @x + @y
end

def bar(new_x)
  @z = new_x + @y
  @z * 2
end

??? - Please note that my algorithms are much larger so efficiency is my 
friend in this case. Thank you!
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