C++: template to check if expression compiles

When writing template specialization with SFINAE you often come to the point where you need to write a whole new specialization because of one small not-existing member or function. I would like to pack this selection into a small statement like orElse<T a,T b>.

small example:

template<typename T> int get(T& v){
    return orElse<v.get(),0>();
}

is this possible?