require 'lxc'

module LXC
  class <<self
    def containers &exe
      return to_enum __method__  unless block_given?
      LXC.
        list_containers.
        map( &LXC::Container.method( :new)).
        each &exe
    end

    def running_containers &exe
      return to_enum __method__  unless block_given?
      LXC.
        list_containers.
        map( &LXC::Container.method( :new)).
        select( &:running?).
        each &exe
    end
  end
end