Is it possible to modify shared struct array in a function.

[Jerry]

On Friday, 8 February 2019 at 04:51:08 UTC, Sudhi wrote:
> On Friday, 8 February 2019 at 04:30:23 UTC, Arun Chandrasekaran 
> wrote:
>> On Friday, 8 February 2019 at 04:13:39 UTC, Sudhi wrote:
>>> [...]
>>
>> Works fine for me with DMD64 D Compiler v2.083.1. 
>> https://run.dlang.io/is/RRM8GU
>
>
> My example code was wrong. Below is the right one.
>
> struct Company
> {
>     string name;
>     string location;
> }
>
> struct Racks
> {
>     int number;
>     int location;
> }
>
> struct Metadata
> {
>     string name;
>     Company[] companies;
>     Racks[] racks;
> }
>
> struct Item
> {
>     Metadata[] met;
>     int count;
> }
>
> shared (Item) item;
>
> void main()
> {
>    updateMetadata();
> }
>
> void updateMetadata()
> {
>    Company company;
>    company.name = "Hello";
>    company.location = "Bangalore";
>    item.met.companies ~= company;
>    import std.stdio: writeln;
>    writeln(item);
> }
>
> https://run.dlang.io/is/iem0PY

You have to cast away shared:

auto loc_item = cast(Item) item;
loc_item.met ~= m;
item = cast(shared) loc_item;

Just to be clear, this is not threadsafe and require a mutex if 
you do this other than as init in main.