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Ruby

James Nelson
James Nelson
23,956 Points

Running a function on an array item

Hello, I am messing around with a program to learn a little more about arrays.

What I plan the program to do is firstly, get a collection of movies and store them in an array. For each movie in an array I would like to assign with a release year. I have the following which does not seem to work.

   '''class Movies

   def initialize 
   @movies = []
       while gettitle
           puts "Movie added"
       end
   end

   def gettitle
       puts "What is the title of the movie? Pass in a space to finish"
       movie = gets.chomp
       if movie.length > 0
           @movies.push(movie)
       else
           return nil
       end
   end

   def to_s
       puts "#{@movies}"
   end

   def getyear
       puts "What year"
  end

    end

   moviecollection1 = Movies.new #returns array
   moviecollection1.each {|year| year.getyear()}'''

I am not quite sure what I'm doing wrong here. If someone could help me with the programs logic that would be fantastic.

Thanks in advance

2 Answers

David Smith
David Smith
21,220 Points

Below is my code on how i might approach this problem (BTW not the only way this could be done) I have added in comments to the code the understand the added parts

Hope this helps

class Movies

   def initialize 
      @movies = []
       while gettitle
           puts "Movie added"
       end
   end

   def gettitle
            details = [];
        # changed your program a litle bit to get the name of the movie and year at the same time
                puts "What is the title of the movie? Pass in a space to finish"
                film = gets.chomp
                puts "what is the year of the movie"
                year = gets.chomp
                if film.length > 0
            # store the date film and year into an array, 
            # then store that array into the @movies array
                details[0] = film
                 details[1] = year
            @movies.push(details)
       else
           return nil
       end
   end
   # this method will return just the movie array
   def return_movie_list
    @movies
   end

   def to_s
       puts "#{@movies}"
   end
  # this method will print out a movie details from the movie that was passed in
  def getyear(movie)
       puts "the movie #{movie[0]} was made in #{movie[1]}"
  end

end

moviecollection1 = Movies.new #returns array
# the line below will return an array from calling the method return_movie_list
# then using each on the array print out the movie and year to the screen via the getyear method
moviecollection1.return_movie_list.each {|movie| moviecollection1.getyear(movie)}
James Nelson
James Nelson
23,956 Points

Hey David, thanks for this. Not quite what I was looking for but great solution none the less. Thanks