“指向最后一个元素的指针"的漂亮语法，std::vector? [英] Prettier syntax for "pointer to last element", std::vector?

问题描述

我想知道是否有更漂亮的语法来获取指向 C++ 向量中最后一个元素的普通指针(而不是迭代器)

I'm wondering if there is prettier syntax for this to get a normal pointer (not an iterator) to the last element in a C++ vector

std::vector<int> vec;

int* ptrToLastOne = &(*(vec.end() - 1)) ;

// the other way I could see was
int* ptrToLastOne2 = &vec[ vec.size()-1 ] ;

但这两个都不是很好看！

But these are both not very nice looking!

推荐答案

int* ptrToLastOne = &vec.back(); // precondition: !vec.empty()

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