From: Lyndon Samson <lyndon.samson@...>
Date: 2005-04-05T15:43:00+09:00
Subject: Re: doubly linked list in Ruby?

On Apr 5, 2005 8:15 AM, Douglas Livingstone <rampant@gmail.com> wrote:
> On Apr 4, 2005 11:03 PM, Ryan Davis <ryand-ruby@zenspider.com> wrote:
> >
> > I disagree. It doesn't add any confidence to my driving to know how
> > every little component inside the car works.
> 
> It does add confidence to know about Array.new, and it does add
> confidence if you know your car stears with the front wheels or the
> back wheels. I agree that you don't need to know how "every little
> component works", that would be taking it too far. But even then, I
> see no problem with someone asking about the details.
> 

Indeed, Ignorance about implementations leads to code like the following

pixels = []
width=100
height=100

height.times { |y|
  pixels[y]=[]
  width.times {|x|
    pixels[y][x] = Pixel.new(100)
  }
}

Ie 100000 objects being created just because its good OO practice.

> Douglas
> 
> 


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