nonnegative integer

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  • 非负整数
    1. You must specify a non-negative integer.
      必须指定非负整数。
    2. The resulting value must be a nonnegative integer less than the sequence's length, and the sequence is asked to assign the assigned object to its item with that index.
      最后的值必须是一个小于该序列长度的非负整数,然后该序列就被请求将被赋对象赋值给它带那个指标的项。