Associative array to Struct at compile time

[BlackEdder via Digitalmars-d-learn]

Is it possible to automatically convert an associative array to a
struct?

Basically I want to do the following (for any struct).

struct A {
     double x = 1;
}

double[string] aa = ["x":1];

auto a = toStruct!A( aa );

I've been trying to do this at compile time, but can't work out
how setMembers and or loop over the associative array at compile
time.

Is this possible at all?