struct parameter_pack

Encapsulates capture of a parameter pack. Typical use is to use instances of this empty struct

for type dispatch in function template deduction/overload resolution.

Example:

template

<typename

Callable, typename... Args>

auto inspect_args(Callable c, parameter_pack

<Args

...>) {

// do something with Args...

}

template

<typename

Callable>

auto inspect_args(Callable c) {

return inspect_args(std::move(c), typename callable_traits

<Callable

>::args{});

}