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Ruby on Rails:如何让Each_do_with_index不更新我的对象的索引?

Ruby on Rails中的each_with_index方法可以用于遍历一个集合,并且提供每个元素的索引。如果你不想更新对象的索引,可以使用each_with_index的替代方法each.with_index

each.with_index方法与each_with_index方法的功能相同,但不会更新对象的索引。下面是一个示例:

代码语言:txt
复制
array = ["apple", "banana", "orange"]
array.each.with_index do |item, index|
  puts "#{index}: #{item}"
end

输出结果将是:

代码语言:txt
复制
0: apple
1: banana
2: orange

在这个例子中,我们使用each.with_index方法遍历了一个数组,并打印了每个元素的索引和值。

关于Ruby on Rails的更多信息,你可以参考腾讯云的Ruby on Rails产品介绍页面。

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