collate.rb

module Kernel
  def collate(*methods)
    methods.collect {|m| send(m) }
  end
end

first, last = User.collate :first, :last # => [#<User id: 1 name: "Pat">, #<User id: 85 name: "Joe">]
avg, max, min = [4, 3, 1, 5, 2].collate :avg, :max, :min # => [3.0, 5, 1]