Question

I created an array template for my personal use.

template <typename T, int size>
struct Vector {
    T data[size];
};

I tried to intialize the data like so:

Vector<unsigned char, 10> test;
test.data[] = {0,1,2,3,4,5,6,7,8,9};

My compiler ended up complaining something about “expected expression.” Does anyone know what I’m doing? I want to be able to use this style of initialization where you give it the entire array definition at once instead of using a for loop to init the elements individually.

Answer 1

Since your class is an aggregate, you can initialize it with the usual brace syntax:

Vector<int, 3> x = { { 1, 2, 3 } };

The exact same thing applies to std::array<int, 3>.