columnar struct storage template

[Nestor via Digitalmars-d-announce]

On Sunday, 29 January 2017 at 13:45:12 UTC, Adam D. Ruppe wrote:
> On Sunday, 29 January 2017 at 13:09:18 UTC, Nestor wrote:
>> This no longer compiles on recent versions of DMD :(
>
> Trivial fix though, it just needs to say "\n" instead of plain 
> \n (it is missing quotes, D used to allow that for whatever 
> stupid reason and has since been fixed).
>
> Actually, tbh, I'm surprised it isn't a bigger fix needed given 
> that that post is from 9 years ago!

Where is it missing the quotes? I tried fixing it like this, but 
it still doesn't compile:

"(){return members["~j.stringof~"];}\"\n\""