Re: turning an array of structs into a struct of arrays

[John Colvin via Digitalmars-d-learn]

On Friday, 3 July 2015 at 10:52:03 UTC, Laeeth Isharc wrote:
I have an array of structs eg
struct PriceBar
{
  DateTime date;
  double open;
  double high;
  double low;
  double close;
}

(which fields are present in this particular struct will depend 
on template arguments).

what is the best way to turn these at compile time into a 
struct of arrays? eg

struct PriceBars
{
  DateTime[] dates;
  double[] opens;
  double[] highs;
  double[] lows;
  double[] closes;
}

I can use FieldTypeTuple and FieldNameTuple, but I am a bit 
lost as to how without static foreach to loop through these in 
order to generate a mixin to declare the new type.  I can turn 
it into a string, but what is the better option?

Thanks.

Not necessarily the best solution to the problem, but I just 
wanted to show this because I think it's kinda cool:

https://gist.github.com/John-Colvin/103d3c064ad6cb4cf435#file-transformmembers-d