我是一個剛剛嘗試學習的初學ruby程序員。我一直在玩這些我自己編寫的代碼。我試圖在課堂中使用titleize方法,但我得到一個錯誤。當我使用大寫方法時,我不會收到錯誤。我究竟做錯了什麼?我只是試圖將標題字符串中每個單詞的首字母大寫。我正在尋找最簡單的答案,不一定是最好的或最短的代碼。謝謝!在Ruby中,我無法使用.titleize在類中初始化
class Movie
def initialize(title, rank, year)
@title = title.titleize
@rank = rank
@year = year
end
def to_s
"#{@rank}: #{@title} (#{@year})"
end
end
movie1 = Movie.new("the godfather", 1, 1972)
movie2 = Movie.new("gladiator", 2, 2000)
movie3 = Movie.new("the godfather part 2", 3, 1974)
movie4 = Movie.new("the dark knight", 4, 2008)
movie5 = Movie.new("return of the jedi", 5, 1983)
movie6 = Movie.new("star wars", 6, 1977)
movie7 = Movie.new("meet joe black", 7, 1998)
movie8 = Movie.new("back to the future", 8, 1985)
movie9 = Movie.new("the bourne identity", 9, 2002)
movie10 = Movie.new("a lot like love", 10, 2005)
movies = [movie1, movie2, movie3, movie4, movie5, movie6, movie7, movie8, movie9, movie10]
puts "Robbie's Top #{movies.size} Movies:"
puts movies
你得到了什麼錯誤?是否還有'titleize'方法?我不認爲有...... – iamnotmaynard
http://ruby-doc.org/core-2.2.0/String.html – iamnotmaynard
4:在'initialize'中:未定義的方法'titleize'爲「教父」:String (NoMethodError)from top_ten_movies.rb:14:in new from top_ten_movies.rb:14:in'' –
ibadukefan