What is the simplest way to convert array to vector?

Question

What is the simplest way to convert array to vector?

void test(vector _array)
{
  ...
}

int x[3]={1, 2, 3};
test(x); // Syntax error.
         


        

Answer 1

You're asking the wrong question here - instead of forcing everything into a vector ask how you can convert test to work with iterators instead of a specific container. You can provide an overload too in order to retain compatibility (and handle other containers at the same time for free):

void test(const std::vector& in) {
  // Iterate over vector and do whatever
}

becomes:

template 
void test(Iterator begin, const Iterator end) {
    // Iterate over range and do whatever
}

template 
void test(const Container& in) {
    test(std::begin(in), std::end(in));
}

Which lets you do:

int x[3]={1, 2, 3};
test(x); // Now correct

(Ideone demo)