Consider the following artificial example:
template <typename T, typename... Args>
struct A {
typedef T Type;
};
Using A
with 1 or more arguments works while using it with zero arguments fails as expected:
error: wrong number of template arguments (0, should be 1 or more)
Is it possible to make A
handle the case of zero template arguments defining A::Type
to int
if there are no arguments and to the first template argument if there are?
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