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Is it possible to use fold expression in class template deduction guide?
I did a simple test as follow:
#include <iostream>
template <typename T, std::size_t N, std::size_t D> struct MyArray {
template <typename First, typename ... Rest> MyArray(Firs...
Nima Ghorab
Votes: 0
Answers: 1
The deduction guide for std::array
In the C++ 17 and C++ 20 Working Drafts of the C++ Standard the deduction guide for the class template std::array is defined the following way
template<class T, class... U>
array(T, U...) -> ...
Vlad from Moscow
Votes: 0
Answers: 1
Type is deducted successfully when is wrapped in method, but not when used in direct alias
Code where type deduction is wrapped method
struct InterfaceOverriderFactory
{
template <typename Interface>
decltype(auto) operator()(Type<Interface>) const noexcept
{
...
Nufun
Votes: 0
Answers: 0
clang vs gcc - CTAD of struct deriving from template parameter
Consider the following code:
template <typename B>
struct D : B { };
D d{[]{ }};
gcc 12.x accepts it and deduces d to be D</* type of lambda */> as expected.
clang 14.x rejects it with...
Vittorio Romeo
Votes: 0
Answers: 1