From: Jeremy Woertink <jeremywoertink@...>
Date: 2009-11-25T03:59:27+09:00
Subject: Re: Help with each_with_index method

Chris Pelow wrote:
> Hi there,
> I'm looking for help with my work here.I'm just learning Ruby.
> Basically I have 5 names entered into an array. They have a firstname
> and surname. A middlename is then optional.
> What I want to do is to print out the names like this..
> John Seymour Smith
> Peter        Jones
> Mary         Walsh
> 
> So it yields the middlename and prints it out if it has one.
> 
> Some of my code is as follows...
> 
> [code]
> people << Person.new("John", "Paul", "Smith" )
> people << Person.new("Mary","Barry", "Jones" )
> people << Person.new("Chris","Townsend", "Barry" )
> people << Person.new("Peter","", "Murphy" )
> people << Person.new("Scott","", "Evans" )
> 
> people_sorted = people.sort
> people_sorted.each do |person|
> people_sorted.each_with_index do|person, index|
>   puts "Hi there #@index #@person!"
>   end
> [/code]


I was a bit confused by your post, but if I understand correctly, you 
only want people with a middle name, and then print their names out?

ok, well to start, I would recommend including the curly braces when 
you're using string interpolation. This way you can include your local 
variables and not just instance variables.


people = []
people << Person.new({:firstname => "Billy", :middlename => "Jones", 
:surname => "Smith"})
people << Person.new({:firstname => "Sally", :middlename => "", :surname 
=> "Johnson"})

people.each do |person|
  puts "Hello #{person.firstname}" unless person.middlename.empty?
end



Hope that helps.

~Jeremy Woertink
-- 
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