From: Juanger <juanger@...>
Date: 2008-07-21T10:29:23+09:00
Subject: Re: [QUIZ] Records and Arrays (#170)

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Mine:
require 'ostruct'

class AryOfRecs

  def initialize
    @ary =3D []
  end

  def <<(record)
    @ary << record
    keys =3D ( record.respond_to?("marshal_dump") ? record.marshal_dump.key=
s :
record.instance_variables)
    keys.each { |key|
      roa_way(key.to_s.sub("@","")) if
record.respond_to?(key.to_s.sub("@",""))
    }
  end

  def [](index)
    return @ary[index]
  end

  def to_a
    @ary
  end

  private

  def roa_way(attrib)
    instance_eval(
    %(def #{attrib}
        @ary.map { |rec| rec.#{attrib} }
      end))
  end
end

I only made the wrapper for an array of records, I't can be filled as in th=
e
example:

data =3D AryOfRecs.new
File.open("data.txt").each do |line|
  name, age, color =3D line.chomp.split(/,/)
  d =3D OpenStruct.new
  d.name =3D name
  d.age =3D age
  d.color =3D color
  data << d
end

puts data[2].name
puts data.name[2]

Or with a class:

class Person
  attr_accessor :name, :age, :color
end

data =3D AryOfRecs.new
File.open("data.txt").each do |line|
  name, age, color =3D line.chomp.split(/,/)
  d =3D Person.new
  d.name =3D name
  d.age =3D age
  d.color =3D color
  data << d
end

puts data[2].name
puts data.name[1]

--=20
Ash Mac durbatul=FBk, ash Mac gimbatul, ash Mac thrakatul=FBk agh burzum-is=
hi
krimpatul.
Juanger. http://xocoruby.blogspot.com

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