nonnegative integer
常见例句
- Each argument must be an expression that evaluates to a nonnegative integer.
每个参数必须是计算结果为非负整数的表达式。 - 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。 返回 nonnegative integer