import std.stdio;
struct ArrayWrapper(T) {
    T[] array;
    alias array this;
}

void main() {
    ArrayWrapper!(uint) foo;
    foo.length = 5;  // Works
    foo[0] = 1;      // Works
    writeln(foo[0]);  // Works
    writeln(foo[$ - 1]);  // Error:  undefined identifier __dollar
    writeln(foo[0..2]);  // Error:  ArrayWrapper!(uint) cannot be sliced with []
}