#include <string>
#include <map>
#include <memory>
#include <vector>
#include <iostream>
struct Parameter
{
};
template<typename T>
struct TypedParameter : public Parameter
{
TypedParameter (const T& data): data(data){};
T data;
};
struct ParameterList
{
template <class... NamedParams>
ParameterList(NamedParams... namedParams)
{
buildList(namedParams...);
}
std::map<std::wstring, std::shared_ptr<Parameter>> list;
template<class T> void addParameter(const std::wstring& name, const T& param)
{
list[name] = std::shared_ptr<Parameter>(new TypedParameter<T>(param));
}
template<class T> T& getParameter(const std::wstring& name) const
{
return static_cast<TypedParameter<T>*>(list.at(name).get())->data;
}
private:
template <class... NamedParams>
void buildList() {}
template <class Name, class Value, class... NamedParams>
void buildList(Name&& name, Value&& value, NamedParams... restParams)
{
addParameter(name, value);
buildList(restParams...);
}
template<class Single, class... Rest>
void buildList(const Single&, Rest... rest);
};
class Test
{
private:
const ParameterList _param;
protected:
public:
Test(ParameterList p):
_param(p)
{
}
Test(const std::wstring& name, int age) : _param(L"name", name, L"age", age)
{
}
void Present()
{
std::wcout << L"My name is " << _param.getParameter<std::wstring>(L"name");
std::wcout << L" and I'm " << _param.getParameter<int>(L"age") << L" years old." << std::endl;
}
};
int main() {
Test test(L"Piotr", 42);
test.Present();
}
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