Article View: pl.comp.lang.c
Article #310390Re: variadic templates - rozwijanie argumentów, błąd kompilacji
From: Przemek Biernat
Date: Wed, 29 Mar 2023 14:41
Date: Wed, 29 Mar 2023 14:41
45 lines
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2782 bytes
On Wednesday, September 14, 2022 at 6:34:23 PM UTC+2, Maciek wrote:
> kod poniższy działa:
>
> void print() {
> std::cout << "IN FUNCTION " << __func__ << std::endl;
> std::cout << "ENDING ..." << std::endl;
> return;
> }
>
> template<typename T, typename ... A>
> auto print(T a, A... args) -> void {
> std::cout << "IN FUNCTION " << __func__ << std::endl;
> std::cout << a << std::endl;
> print(args ...);
> }
>
> Natomiast w przypadku szablonu:
>
> template<typename T, typename ... Types>
> class T_Operators_tests {
> public:
> T_Operators_tests() {}
> ~T_Operators_tests() {}
>
> void print() {
> std::cout << "IN FUNCTION " << __func__ << std::endl;
> std::cout << "ENDING ..." << std::endl;
> return;
> }
> void print(T var1, Types... var2)
> {
> std::cout << var1 << std::endl;
>
> this->print(var2...);
> }
> };
>
> kompilator nie chce rozwinąć funkcji i nie pasuje mu liczba argumentów
>
> Severity Code Description Project File Line Suppression State
> Error C2661 'T_Operators_tests<int,int,int,int>::print': no overloaded function takes 3 arguments TestCpp1 operators_learn.hpp 37
>
> Na czym polega mój błąd ?
Przestańcie używać variatic templetes, bo to już jest zboczenie.
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