Strings concatenated at compile time?

[anonymous via Digitalmars-d-learn]

On Thursday, 1 May 2014 at 10:42:36 UTC, Unwise wrote:
> In the following example from the documentation, are strings 
> concatenated at compile time?
>
> template foo(string s) {
>   string bar() { return s ~ " betty"; }
> }
>
> void main() {
>   writefln("%s", foo!("hello").bar()); // prints: hello betty
> }

I guess it's not guaranteed, but constant folding should take 
care of it, yes.