Question

如何让\n在我的输出中真正起作用？目前它只是在一个长块中写入它。谢谢你的帮助

Dir.chdir 'C:/Users/name/Music'
music = Dir['C:/Users/name/Music/*.{mp3, MP3}']
puts 'what would you like to call the playlist?'
@new = ''
playlist_name = gets.chomp + '.m3u'

music.each do |z|
  @new += z + '\n'
end

File.open playlist_name, 'w' do |f|
  f.write @new
end

Answer 1

使用"\n"代替'\n'

Answer 2

您可以在File.open块中完成所有操作：

Dir.chdir 'C:/Users/name/Music'
music = Dir['C:/Users/name/Music/*.{mp3, MP3}']
puts 'what would you like to call the playlist?'
playlist_name = gets.chomp + '.m3u'

File.open playlist_name, 'w' do |f|
  music.each do |z|
    f.puts z
  end
end

Answer 3

实际上你甚至不需要这个块：

  Dir.chdir 'C:/Users/name/Music'
  music = Dir['C:/Users/name/Music/*.{mp3, MP3}']
  puts 'what would you like to call the playlist?'
  playlist_name = gets.chomp + '.m3u'

  File.open(playlist_name, 'w').puts(music)

Answer 4

我想与\n分享我的经验
我注意到“ \ n”的工作方式为-

puts "\n\n" // to provide 2 new lines

但不是

p "\n\n"

也放置'\n\n'
不起作用。

希望会为您服务！

如何在输出中换行

4 个答案: