C++ STL advance 和next 区别

advance和next的功能是获取下一个元素,但是这两个操作有一点不同

std::advance

• modifies its argument
  会修改迭代器本身的值
• returns nothing
  返回值是void,也就是不返回值
• works on input iterators or better (or bi-directional iterators if a negative distance is given)

std::next

• leaves its argument unmodified
  不改变迭代器的值
• returns a copy of the argument, advanced by the specified amount
  返回指定的值元素的值
• works on forward iterators or better (or bi-directional iterators if a negative distance is given))

https://stackoverflow.com/questions/15017065/whats-the-difference-between-stdadvance-and-stdnext