string to symbol for hash key
</span>  <span class='id identifier rubyid_attributes'>attributes</span> <span class='op'>=</span> <span class='id identifier rubyid_attributes'>attributes</span><span class='period'>.</span><span class='id identifier rubyid_each_with_object'>each_with_object</span><span class='lparen'>(</span><span class='lbrace'>{</span><span class='rbrace'>}</span><span class='rparen'>)</span> <span class='lbrace'>{</span> <span class='op'>|</span><span class='lparen'>(</span><span class='id