我正在尝试创建一个对象,该对象存储从函数创建的对象元组,static但是当tuple创建时,对象被复制到tuple而不是直接放入其中,调用两次中每个对象的析构函数tuple,这是一种行为我想避免。有没有办法解决这个问题,而不必为每个插件类创建自定义移动/复制构造函数?
代码如下:
#include <tuple>
#include <iostream>
namespace details
{
template<typename PluginT, typename ContainerT, typename TupleT, size_t... Is>
static PluginT construct_plugin(ContainerT& container, TupleT&& tuple, std::index_sequence<Is...>)
{
return PluginT(container, std::get<Is>(std::forward<TupleT>(tuple))...);
}
template<typename PluginT, typename ContainerT, typename TupleT>
static PluginT construct_plugin(ContainerT& container, TupleT&& tuple)
{
return construct_plugin<PluginT>(container, std::forward<TupleT>(tuple), std::make_index_sequence<std::tuple_size<std::decay_t<TupleT>>::value>{});
}
}
struct simple_plugin
{
template<typename ContainerT>
simple_plugin(ContainerT& container) {}
~simple_plugin()
{
std::cout << "simple_plugin destructor" << std::endl;
}
};
struct plugin_with_params
{
template<typename ContainerT>
plugin_with_params(ContainerT& …Run Code Online (Sandbox Code Playgroud)