From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2010-10-08T17:57:21+09:00
Subject: Re: each_with_index

On Fri, Oct 8, 2010 at 10:41 AM, Pavel Varela <impulse221@yandex.ru> wrote:
> hello everybody! i'm working on a programm that has that peace of code:
>
>  def show_titles
>    file = File.read("articles_file.txt")
>    raw_articles = file.split("\n\n")
>    raw_articles.each do |elem|
>    title, *text = elem.split("\n")
>    @array_of_splits << Article.new(title, text.join(" "))
>    end
>    @array_of_splits.each_with_index do |elem, index|
>    puts "#{index}: #{elem.title}"
>
>  end
>
> the next thing i wanna do is to let the user through gets pick the title
> and then the whole article must show up in a console. For example:
>
> 1. Title 1
> 2. Title 2
> 3. Title 3
>
> Pick the title of the article
> gets = 2
>
> Title 2
> text 2 text 2......
>
> The question is how can i do that using each_with_index ? Thank u!

You don't need each_with_index for that. You have the list of articles
in @array_of_splits, so you just use [] to get the correct article:

choice = gets.to_i - 1 # the array starts at 0
@array_of_splits[choice] # returns the Article, show the fields you want

Jesus.