class Hash

  # Aggregates all one-key hashes, or a single multi-key hash from an
  # Enumerable. Use for getting options out of an *arguments array.
  def self.opts_from args, *opts
    opts = Hash.opts_from opts # recursive! yay!
    raise ArgumentError if !args.is_a? Enumerable
    orig_args = args.clone

    all_hashes = args.select {|arg| arg.is_a? Hash }

    if opts[:destructive]
      if all_hashes.size == 1

      else # all_hashes.size

      end # all_hashes.size
    else # opts[:destructive]
      if all_hashes.size == 1

      else # all_hashes.size

      end # all_hashes.size
    end # opts[:destructive]


    else
      hash_args = args.select {|arg| arg.is_a? Hash && arg.size == 1 }
    end
    hash_args
  end

  # Aggregates all one-key hashes, or a single multi-key hash from an
  # Enumerable, removing these from the original Enum. Use for getting options
  # out of an *arguments array.
  def self.opts_from! args, *opts
    Hash.opts_from args, {:destructive => true}, opts
  end
end