If someone removes the index, the program will not work unless the programmer makes changes.

如果某人删除了索引，程序就不能工作，除非程序员进行更改。

youdao

Transform if (not condition) into unless (condition).

将if (not条件)变换成unless(条件)。

youdao

Transform if (not condition) into unless (condition).

将if (not条件)变换成unless(条件)。

youdao