STL - 在 <algorithm> 中使用成员函数或函数? [英] STL - Use member functions or functions in <algorithm>?

问题描述

我想到了这个问题，因为我对以下问题的一些答案表明我可以使用 vector<T>::assign 或 copyback_insert_iterator此处.我的问题是，使用一种方法相对于另一种方法有哪些优缺点?

I thought of this problem due to some of the answers I got to the following problem suggesting that I could use vector<T>::assign or copy with a back_insert_iterator here. My problem is, what are the drawbacks and advantages of using one method over another?

推荐答案

assign 覆盖 vector 的内容，其中 copy 用 back_insert_iterator 对向量执行 push_back 从而保留其内容.

assign overwrites the content of the vector where as copy with back_insert_iterator does a push_back on the vector thus preseving its content.

EDIT:如果问题是通用的(即是使用容器中定义的成员函数还是算法)，我更喜欢使用成员函数，因为它可能已针对特定问题进行了优化容器与通用算法相比.

EDIT: If the question is generic (i.e. whether to use a member function defined in the container or an algorithm), I prefer to use the member function as it might have been optimized for the particular container compared to a generic algorithm.

这篇关于STL - 在 <algorithm> 中使用成员函数或函数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！