Remove instance from array

[Igor Shirkalin via Digitalmars-d-learn]

On Wednesday, 5 July 2017 at 15:30:08 UTC, Jolly James wrote:
>> WhatEver[] q = [];
>>
>> [...]
>>
>> auto i = new WhatEver();
>> q[] = i;
>>
>
> How does one remove that instance 'i'?

What exactly do you want to remove? After a[]=i your array 
contain a lot of references to 'i'.