Question

How do you call constructors when allocating an array with new?

For example, in the following code how would I call the constructor for each instantiation of A, initialising b to 5 for all 10 elements?

void main() {
    A[] a = new A[10];
}

class A {
    int b;
    this(int init) {
        b = init;
    }
}

I’m guessing it’s not possible, but I can hope…

Answer 1

a simple loop should do (and it’s the most readable)

foreach(ref el;a){
    el=new A(5);
}

or you can use the array initializer:

A[] a=[new A(5),new A(5),new A(5),new A(5),new A(5),
       new A(5),new A(5),new A(5),new A(5),new A(5)];