void main()
{
    A aclass = new A();
    aclass.setTen(8);
}

struct S
{
    int var = 5;
}

class A
{
    S[42] sarr;

    void setTen(int numb) @nogc
    {
        S temp;
        temp.var = 10;
        sarr[numb] = temp;
    }
}