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摘要： 1. map和set中的key是唯一的，multimap和multiset中的key可以出现多次。2. Whenever we use an associative container, its keys have not only a type, but also an associated comparsion function.3. The value_type is a pair and that we can chagne the value but not the key member of that pair.4. 用下标插入元素时，内部操作是这样的： - 找key，找不到 .. 阅读全文

摘要： 1. Two constraints that element types must meet: - The element type must support assignment. - We must be able to copy objects of the element type. Soreferences, IO library types, auto_ptr typeare not permitted.2. Only vector and deque support iterator arithmetic and the use of relational operato... 阅读全文