Dynamically setting struct values from hash map

[Andrew Chapman via Digitalmars-d-learn]

Hi guys, apologies for the silly question, but I come from the 
world of dynamic languages and I'm wondering if it's possible to 
set struct values basic on dynamic variables?

e.g.

struct Person {
    string firstName;
    string lastName;
}

void main() {
    string[string] map;

    map["firstName"] = "Homer";
    map["lastName"] = "Simpson";
}

Is it possible to iterate through the hash map and set the struct 
values using the key/value pairs?

Something like this:

e.g.
Person p1;

foreach(key,val; map) {
    p1[key] = val;
}

The problem I'm trying to solve is that I'm wanting to write a 
generic "model" class that can read a record from a database and 
populate a known struct from the database values.  I have seen 
the "allMembers" method from the traits module that can give me 
the names of the struct fields, but I am unsure if it's even 
possible to set the struct values using variable/dynamic names.

Any help will be greatly appreciated!
Cheers,
Andrew.