what's the proper way to assign this?

[Dr Machine Code]

On Tuesday, 4 January 2022 at 17:58:05 UTC, Adam D Ruppe wrote:
> On Tuesday, 4 January 2022 at 17:23:11 UTC, Dr Machine Code 
> wrote:
>> I could fix just with
>>
>> ```d
>> 	data.entries ~= entry.get;
>> ```
>
> This is what the original code was doing - it used to 
> implicitly do this.
>
> So while this might be buggy, it wouldn't be a new bug at least.

it's supposed to call .get implicitly then right? what made that 
change, assuming it worked at time. Library? compile changes?