gistfile1.txt

class foo(T, uint N) if (N <= 4) {
    private T[N] _co; /* coordinates */

    this(A...)(A args) {
        writefln("GOSH");
    }
}

void main() {
    alias foo!(float, 3) foo3;
    auto v = new foo3(8, 9, 9, 3, "test");
}