state& set_function(T&& key, TFx&& fx, TObj&& obj) {
global.set_function(std::forward<T>(key), std::forward<TFx>(fx), std::forward<TObj>(obj));
return *this;
}
state& set_function(T&& key, TFx&& fx) {
global.set_function(std::forward<T>(key), std::forward<TFx>(fx));
return *this;
}
state& set_function(Key&& key, Sig* fun_ptr){
global.set_function(std::forward<Key>(key), fun_ptr);
return *this;
}
state& set_function(Key&& key, Sig C::* mem_ptr, T&& obj) {
global.set_function(std::forward<Key>(key), mem_ptr, std::forward<T>(obj));
return *this;
}
state& set_function(Key&& key, R fun_ptr(Args...)){
global.set_function(std::forward<Key>(key), fun_ptr);
return *this;
}