数组第三个元素是该任务类型的分数，所以我必须调用to_s方法，将该整数转换为字符串。

The third element of the array is the number of points for this assignment type, so I have to invoke the to_s method to convert that integer into a string.

youdao

对于不能将字符串转换为整数的情况，将在目标字段中使用一个用户指定的默认整数。

In cases where the string cannot be converted to an integer, a user-specified default int is placed in the target field.

youdao

要将布尔值或整数存储到项目集，需要将该值转换为字符串。

To store a boolean value or an integer to the item set, the value needs to be converted to a string.

youdao