Compile Time versus Run Time

[inevzxui via Digitalmars-d-learn]

On Monday, 31 July 2017 at 15:43:21 UTC, Martin Tschierschke 
wrote:
> As a rookie in D programming I try to understand the power of 
> templated functions with compile time parameters. With DMD 
> 2.074 a compile time format
> (auto output = format!("Print this %s")(var);)
>
> was introduced, now we all know that very many of this format 
> strings are immutable, so wouldn't it be cool to automatically 
> detect this and use the compile time version?
>
> Without the need to think about it and to use an other syntax?
> Is this theoretically possible?
>
> Regards mt.

That's what writeln() does. The format is detected for each 
element of the variadic.