What are the different user classes?
用户等级之间的区别?。
A user can belong to one or many classes.
一个用户可以属于一个或多个类。
Expect to see few (if any) user defined classes fall into this category.
期望越少(如果有的话)的用户定义类落入此种境地。
User interrupt in Ruby infinite loop (multiple classes)?
在红宝石无限循环中断用户(多类)？
User interrupt in Ruby infinite loop (multiple classes)?
在红宝石无限循环中断用户(多类)？
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