getting attrs

usage.rb

class MyClass

  attr_accessor :at1, :at2, :at3

  def initialize
    @at1 = "one"
    @at2 = "two"
    @at3 = "three"
  end

  def my_attrs(*attrs)
    {}.tap do |h|
      attrs.each {|a| h[a] = self.send(a)}
    end
  end

end

irb(main):048:0> m = MyClass.new
=> #<MyClass:0x2b22010 @at1="one", @at2="two", @at3="three">
irb(main):049:0> m.my_attrs("at1")
=> {"at1"=>"one"}
irb(main):050:0> m.my_attrs("at1", "at2")
=> {"at1"=>"one", "at2"=>"two"}
irb(main):051:0>