From: Steven Davidovitz <steviedizzle@...>
Date: 2006-11-16T15:12:47+09:00
Subject: Re: basic mistake?

On Thu, 16 Nov 2006 14:21:21 +0900
Hal Fulton <hal9000@hypermetrics.com> wrote:

> Nia wrote:
> > --------------------------------------------------------
> > class BookStore
> >   @bookstore=Array.new
> >   
> >   def initialize(*books)
> >     i=0
> >     books.each do |x|
> >       #@bookstore.push(x)
> >       puts "(#{i})" + x.inspect
> >       i+=1
> >     end
> >   end
> > end
> > 
> > class Book
> >   def initialize(name,cost)
> >     @book_name=name
> >     @book_cost=cost
> >   end
> >   
> >   def detail
> >     puts "Book: #{@book_name}  ($#{@book_cost})"
> >   end
> > end
> > 
> > b1=Book.new('Harry Potter','9.95')
> > b2=Book.new('The Raven','8.65')
> > store = BookStore.new(b1,b2)
> > --------------------------------------------------------------
> > this bit of code seems to work fine, but when i try to assign an object to my bookstore 
> > array, i'm given an error(i commented it out since it wasn't working). wierd part is that this 
> > seem to work fine outside of a class. am i missing something?, like a declaration? this isn't 
> > the first time i've encounter this problem. please help me solve it.
> > 
> 
> At least two mistakes here... move the @bookstore line
> down into the initialize method. And take off the #
> from that line -- that makes it a comment.
> 
> Hal
> 
> 
> 

You can also consolidate part of the initialize method like so:
def initialize(*books)
   @bookstore=Array.new
   books.each_with_index do |x,i|
      @bookstore.push(x)
      puts "(#{i})" + x.inspect
   end
end