anonymous / gist:3061359
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#include <iostream>
 
template <typename T>
struct nesting
{
struct nested
{
T value;
};
 
template <typename U>
friend T get_value(U const& x)
{
return x.value;
}
};
 
int main()
{
nesting<int>::nested v = { 42 };
std::cout << get_value(v) << std::endl;
}
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