Arrays 如何正确地将数组元素分隔成字符串？

我有一个像这样的数组

%w(Dog Cat Bird Rat).each_with_index do |element, index|
# "w" for word array
# It's a shortcut for arrays

  puts ("%-4s + #{index}" % element)    
end

这将输出类似于

Dog + 0
Cat + 1
Bird + 2
Rat + 3

如果我想把动物换成绳子之类的东西怎么办？ 所以它说

This is string 0 + 0
This is string 1 + 1
This is string 2 + 2
etc

有办法吗？ 这不起作用：

%w('This is string 0', 'This is string 1', 'This is string 2', 'This is string 3').each_with_index do |element, index|
# "w" for word array
# It's a shortcut for arrays

  puts ("%-4s + #{index}" % element)    
end

---

如果希望数组可以包含带空格的字符串，请按常规方式构建

['This is string 0', 'This is string 1', 'This is string 2', 'This is string 3'].each_with_index do |element, index|

请注意，这可以用多种方式编写。一个较短的方法是

(0..3).map { |i| "This is string #{i}" }.each_with_index do |element, index|

只需使用普通数组语法：

['This is string 0', 'This is string 1', 'This is string 2', 'This is string 3'].each_with_index do |element, index|
  puts ("%-4s + #{index}" % element)    
end

This is string 0 + 0
This is string 1 + 1
This is string 2 + 2
This is string 3 + 3

4.times{i}放置这是字符串{i}+{i}