std::vector::crend
const_reverse_iterator crend() const noexcept;
Returns a const_reverse_iterator pointing to the theoretical element preceding the first element in the container (which is considered itsreverse end).
返回一个const_reverse_iterator(具有const属性的reverse_iterator)指向假设存在于一个倒序容器的最后一个位置后的超尾元素。(超尾元素本身并不是实际存在的)
Parameters
none
Return Value
A const_reverse_iterator to the reverse end of the sequence.
返回一个const_reverse_iterator指向倒序序列的尾部。
Member type const_reverse_iterator is a reverse random access iterator type that points to
a const element (see vector member types).
返回的迭代器属于随机访问迭代器。
Example
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Output:
myvector backwards: 5 4 3 2 1
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Complexity
Constant.
Iterator validity
No changes.
Data races
The container is accessed.
容器将被访问。
No contained elements are accessed by the call, but the iterator returned can be used to access them. Concurrently accessing or modifying different elements is safe.
该方法不会访问容器里的元素,但是返回的这个iterator可以用来访问元素,并且用他们来访问或者是修改不同的元素都是安全的。
Exception safety
No-throw guarantee: this member function never throws exceptions.
The copy construction or assignment of the returned iterator is also guaranteed to never throw.
该方法不会抛出异常。
利用复制构造函数或者赋值运算得到该iterator的拷贝也不会抛出异常。
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2014-8-12
于GDUT