Can I avoid an ambiguity, when I declare a fixed length vector in class?

Question

I want to declare a vector of 2 elements as a class member. But next code generates an error:

class A {
private:
   std::vector v (2);
   ...
}
         


        

Answer 1

You can safely use this syntax:

std::vector v = std::vector(2);

Alternatively, use brace initialization, but you must be careful: the std::initializer_list constructor will be picked, so to initialize a vector with two value- (therefore zero-) initialized ints you need

std::vector v{0, 0};