std::set 中的索引或位置

2022-01-07 00:00:00 c++ stl

我有一个 std::string 的 std::set.我需要集合中每个字符串的索引"或位置",这是上下文中有意义的概念吗?

I have a std::set of std::string. I need the "index" or "position" of each string in the set, is this a meaningful concept in the context?

我猜 find() 将返回一个迭代器到字符串,所以我的问题可能更好地表述为:如何将迭代器转换为数字?".

I guess find() will return an iterator to the string, so my question might be better phrased as : "How do I convert an iterator to a number?".

推荐答案

std::distance 正是你所需要的.你会想要,我猜 std::distance(set.begin(), find_result)

相关文章