Having trouble passing multiple initializer lists to variadic function template

Question

I don\'t understand the error message when trying to pass a variable number of initializer lists:

template
void foo(Values...)
{
}
         


        

Answer 1

The problem is likely deducibility. {} could be uniform initializers to any of the arguments.

This works:

#include 

template
void foo(std::initializer_list... args)
{
}

template
void foo(Values&&... args)
{
}

int main()
{    
    foo(1, 2, 3, "hello", 'a');
    foo({1}, {2, 3});
}

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