C++ 概念: BidirectionalIterator
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BidirectionalIteratorForwardIterator是一个可以在两个方向上移动(即递增和递减).原文:
A
BidirectionalIterator is a ForwardIterator that can be moved in both directions (i.e. incremented and decremented).[编辑] 要求
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ForwardIterator -
operator--同等条件operator++原文:operator--with equivalent conditions asoperator++
一个
mutable BidirectionalIterator是一个BidirectionalIterator,另外满足OutputIterator要求的.原文:
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mutable BidirectionalIterator is a BidirectionalIterator that additionally satisfies the OutputIterator requirements.