notes/pl/d/features/variant.txt

public import std.variant;



    ResultSet query(T...)(string sql, T t)
    {
        log(sql);
        Variant[] args;
        foreach(arg; t) {
            Variant a;
            static if(__traits(compiles, a = arg))
                a = arg;
            else
                a = to!string(t);
            args ~= a;
        }
        return queryImpl(sql, args);
    }