What's equivalent to C#'s select?

[Simen Kjærås]

On Monday, 15 January 2018 at 15:24:50 UTC, Marc wrote:
> I just thought that filter() could be evaluated at compile time 
> too, as others function that I've used so far. Sometimes I 
> don't know if a native function can be evaluated at compile 
> time until I do enum x = func();

Yeah, it takes some getting used to what happens when and how 
these interact. I can recommend H. S. Teoh's writeup: 
https://wiki.dlang.org/User:Quickfur/Compile-time_vs._compile-time

> if I want to have minimum runtime code to filter out immutable 
> strings, the first one is better right?

Indeed. It generates the equivalent code to just writing the 
writeln()s you want, with no run-time overhead.

--
   Simen