Concat enum of strings into one string

[Mike Franklin]

On Tuesday, 14 August 2018 at 13:42:04 UTC, Andrey wrote:
> Hello,
> I have a enum:
>
> enum Type : string
> {
>     One = "Q1",
>     Two = "W2",
>     Three = "R3"
> }
>
> I want to concat it in compile-time:
>
> enum result = doConcat!Type();
>
> And get this result:
>
> writeln(result); // output: "Q1 W2 R3"
>
> Delimiter here is space symbol.
> How do do it?

I think you just need to use the concatenation operator `~`.

enum Type : string
{
     One = "Q1",
     Two = "W2",
     Three = "R3"
}

enum concatenation = Type.One ~ " " ~ Type.Two ~ " " ~ Type.Three;

void main()
{
     import std.stdio: writeln;
     writeln(concatenation);
}

Mike