0

私はMovieという名前のクラスを持っています：

class Movie 
    attr_accessor :title, :director, :date_of_issue, :register_number
    def initialize(title, director, date_of_issue, register_number)
        @title, @director, @date_of_issue, @register_numver = title, director, date_of_issue, register_number
    end
    def Basic_info
        puts "Title : #{@tytul}, Director: #{@autor}"
    end
end

まったく新しいオブジェクトを作成せずに、既存のMovieオブジェクトの変数を変更するメソッドを作成したいと思います。出来ますか？もしそうなら、どのように？

4

1 に答える 1

1

そのための方法は必要ありません。正しい方向に進んでいて、いくつかのエラーを修正しました。

class Movie  
  attr_accessor :title, :director, :date_of_issue, :register_number 
  def initialize(title, director, date_of_issue, register_number) 
    @title, @director, @date_of_issue, @register_numver = title, director, date_of_issue, register_number 
  end 
  def basic_info 
    puts "Title : #{@title}, Director: #{@director}" 
  end 
end  

movie = Movie.new "title", "director", "", 0
movie.director = "Martin Scorsese"
movie.title = "Goodfellas"
movie.date_of_issue = "1990"
movie.basic_info

#=>Title : Goodfellas, Director: Martin Scorsese
于 2012-08-27T16:04:31.760 に答える