Use decltype(auto) return type to sometimes return references...

inconsistent deduction with decltype(auto) when returning pointer or nullptr...

Using decltype(auto) for Return Type in Custom Callable Class Template...

What are some uses of decltype(auto)?...

Why does this const function return a non-const reference?...

Why are adornment to auto allowed in the return type of a function...

error: use of 'decltype(auto) X before deduction of 'auto' (for generated lambda)...

What is the difference between returning auto&& and decltype(auto)?...

Why decltype(auto) infers T& as return type, while dedicated T& does not?...

C++14 Function returns array of objects although copy constructor is deleted...

Does decltype(auto) make trailing return type obsolete?...

Are there any realistic use cases for `decltype(auto)` variables?...

decltype(auto) type deduction: return x vs. return (x)...