implicit splat and explicit splat in Ruby 1.9

gistfile1.rb

class Command

  def initialize(path,arguments,env={})
    @path = path
    @arguments = arguments
    @env = env
  end

  def to_ary
    [@env, @path, @arguments]
  end

end

command = Command.new('ls', ['-l', '-a'], {'FOO' => 'bar'})

env, path, arguments = command

# Ruby 1.9.2
env # => {"FOO"=>"bar"}
path # => "ls"
arguments # => ["-l", "-a"]

# Ruby 1.8.7
env # => #<Command:0x7fb259f894c8 @env={"FOO"=>"bar"}, @arguments=["-l", "-a"], @path="ls">
path # => nil
arguments # => nil