如何从可变参数模板参数中删除元素

How to remove elements from variadic template argument?

本文关键字:参数 删除 元素 变参      更新时间:2023-10-16

>我正在尝试删除可变参数模板参数的第一个元素。代码是这样的:

template<typename ...T>
auto UniversalHook(T... args)
{
    //I want to remove the first element of `args` here, how can I do that?
    CallToOtherFunction(std::forward<T>(args)...);
}

尝试直接方法怎么样。

template<typename IgnoreMe, typename ...T>
auto UniversalHook(IgnoreMe && iamignored, T && ...args)
{
    //I want to remove the first element of `args` here, how can I do that?
    return CallToOtherFunction(std::forward<T>(args)...);
}

(还修复了使用转发引用,并添加了明显的return(

我只是得到了一点帮助,并找到了解决方案:

int main()
{
    Function(3,5,7);
    return 0;
}
template<typename ...T>
auto CallToAnotherFunction(T&&... args) 
{
    (cout << ... << args);
}
template<typename ...T>
auto Function(T&&... args) {
    /*Return is not needed here*/return [](auto&& /*first*/, auto&&... args_){ 
        return CallToAnotherFunction(std::forward<decltype(args_)>(args_)...); 
    }(std::forward<T>(args)...);
}
//Output is "57"