Ruby 使用保护在 if 子句中分配变量

Question

是否可以用guard替换下面的if子句？

  end_date = if transaction_end_date.nil?
               (starts_in_the_future ? start_date : today) + MIN_END_DATE
             else
               transaction_end_date
             end

Answer 1

你可以这样做

end_date = transaction_end_date
end_date ||= (starts_in_the_future ? start_date : today) + MIN_END_DATE

或者只是

end_date = transaction_end_date || 
           (starts_in_the_future ? start_date : today) + MIN_END_DATE