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标题: no A until B=?[求助] [打印本页]

作者: midnight 时间: 2003-8-1 10:50
标题: no A until B=?[求助]
no A until B = B->A or B->非A?
A until B=?
请指教!

作者: anchoret 时间: 2003-8-1 12:41

以下是引用midnight在2003-8-1 10:50:00的发言：
no A until B = B->A or B->非A?
A until B=?
请指教!

until = if not

so:
A until B = not b -> a or not a -> b
no A until B = not b -> not a or a->b

作者: midnight 时间: 2003-8-2 09:08
anchoret,谢谢了!但是unless=if not,是不是unless =until?

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