slice

# File activesupport/lib/active_support/core_ext/hash/slice.rb, line 19
        def slice(*keys)
          keys = keys.map! { |key| convert_key(key) } if respond_to?(:convert_key)
          hash = self.class.new
          keys.each { |k| hash[k] = self[k] if has_key?(k) }
          hash
        end