def find(options = {}, &block)
options[:count] ||= :all
options[:order] ||= :asc
options[:what] ||= :first
emails = @@emails.dup
emails.reverse! if options[:what] == :last
emails = case count = options[:count]
when :all then emails
when 1 then emails.first
when Fixnum then emails[0, count]
else
raise 'Invalid count option value: ' + count.inspect
end
if options[:what] == :last && options[:order] == :asc || options[:what] == :first && options[:order] == :desc
emails.reverse!
end
emails.each { |email| email.mark_for_delete = true } if options[:delete_after_find]
if block_given?
emails.each { |email| yield email }
else
emails
end.tap do |results|
emails.each { |email| @@emails.delete(email) if email.is_marked_for_delete? } if options[:delete_after_find]
end
end