Ruby On Rails 面接の質問と回答
Question: What is the convention using ! at the end of method name?Answer:The ! indicates that the method is about to change the object itself. Heres an example: foo = "A TEST STRING" # a string called foo foo.downcase! # modifies foo permanently a test string puts foo # prints modified foo a test string Similarly if you did not want the object to be changed you could have something simple like: foo2 = "A 2nd Test String" # a string called foo foo2.downcase # modifies foo temporarily a 2nd test string puts foo2 nbsp; # prints original foo A 2nd Test String |
復習用に保存
この項目をブックマークに追加したり、難しい内容としてマークしたり、復習セットに入れたりできます。
役に立ちましたか? はい いいえ
ユーザー評価で最も役立つ内容:
- What is Ruby On Rails?
- Why Ruby on Rails?
- Explain how (almost) everything is an object in Ruby.
- What are Gems and which are some of your favorites?
- How would you declare and use a constructor in Ruby?