How I can iterate data in structure

[via Digitalmars-d-learn]

On Friday, 22 August 2014 at 08:44:51 UTC, Suliman wrote:
>>foreach (field; result.tupleof)
>
> Why I should here specify type of iterable element, but not 
> first element that I use for iteration?
>
> I mean:
> foreach (_some_type_possible_enum_ field; result)
>
> ?

You mustn't, because your struct could have fields of different 
types. When you `foreach()` over a tuple, the compiler unrolls 
the loop body, which allows it to use a (potentially) different 
type on each iteration.

If you don't want this, and all the fields have the same type, 
you can iterate over an array made from the fields:

     foreach (field; [result.tupleof]) {
         writeln(field);
     }