Question

以下代码显示错误如下：

"ruby -KU -- 'C:\Users\Ishmael\My Documents\Aptana Studio 3 Workspace\Simple\FirstFile'
C:/Users/Ishmael/My Documents/Aptana Studio 3 Workspace/Simple/FirstFile:55: syntax error, unexpected $end, expecting keyword_end"

我搜索了额外的结尾和结尾的'。'但是徒劳无功，我仍然无法弄清楚它为什么不起作用！

class Greeter
  attr_accessor :name

  def initialize(name="dudes")
    @name=name
  end

  def say_hi

    if @name.nil?
      puts "..."
    else if @name.respond_to?("each")

      @name.each do |name|
        puts "Hello #{name.capitalize}!"
      end

    else
      puts "Hi #{@name.capitalize}!"
    end

  end 

  def say_bye

    if @name.nil?
      puts "..."
    else if @name.respond_to?("join")
      puts 'Goodbye #{@name.join(", ").capitalize}! Come back soon!'
    else
      puts "Bye #{@name.capitalize}!"
    end

  end

end

if __FILE__ == $0

  greeter = Greeter.new
  greeter.say_hi
  greeter.say_bye

  greeter.name = "Ishmael"
  greeter.say_hi
  greeter.say_bye

  greeter.name = ["Albert", "Brenda", "Charles", "Dave", "Englebert"]
  greeter.say_hi
  greeter.say_bye

  greeter.name = nil
  greeter.say_hi
  greeter.say_bye
end

Answer 1

由于缺少end，它不会抱怨额外的end，而是文件的过早结束。在这种情况下，您忘记在if __FILE__ == $0部分之前关闭课程。

这可能是因为您将elsif与else if混为一谈，后者创建了一个全新的if块。

ruby语法错误，意外$ end，期待keyword_end

1 个答案: