DormPatch

@DormPatch!User
struct UserSelection
{
    string username;
}
db.select!UserSelection;

// is equivalent to
struct UserSelection
{
    string username;
}
db.select!(User, UserSelection);

// is equivalent to
db.select!(User, "username");

// is equivalent to
db.select!(User, User.username);

// is equivalent to
db.select!(User, Tuple!(string, "username"));