lambda function with "capture by value"

[Simon Bürger via Digitalmars-d-learn]

If a lambda function uses a local variable, that variable is 
captured using a hidden this-pointer. But this capturing is 
always by reference. Example:

     int i = 1;
     auto dg = (){ writefln("%s", i); };
     i = 2;
     dg(); // prints '2'

Is there a way to make the delegate "capture by value" so that 
the call prints '1'?

Note that in C++, both variants are available using
    [&]() { printf("%d", i); }
and
    [=]() { printf("%d", i); }
respectively.