在cppreference中查看std::visit()页面时，https://en.cppreference.com/w/cpp/utility/variant/visit，遇到了看不懂的代码……这是缩略版:#include#include#include#include#include#includetemplatestructoverloaded:Ts...{usingTs::operator()...;};templateoverloaded(Ts...)->overloaded;intmain(){std::vector>vec={10,15l,1.5,"hello"};fo

在cppreference中查看std::visit()页面时，https://en.cppreference.com/w/cpp/utility/variant/visit，遇到了看不懂的代码……这是缩略版:#include#include#include#include#include#includetemplatestructoverloaded:Ts...{usingTs::operator()...;};templateoverloaded(Ts...)->overloaded;intmain(){std::vector>vec={10,15l,1.5,"hello"};fo