auto name = "D";
auto ver = 2.0;
assert(stringBuf << "Hi " << name << ver << "!\n" << getData == "Hi D2.0!\n");

auto name = "D"w;
auto ver = 2;
assert(stringBuf!wchar << "Hi "w << name << ver << "!\n"w << getData == "Hi D2!\n"w);

auto name = "D"d;
auto ver = 2UL;
assert(stringBuf!dchar << "Hi "d  << name << ver << "!\n"d << getData == "Hi D2!\n"d);