Why dtor are not executed when removing a struct from associative arrays?

[Tejas]

On Monday, 20 September 2021 at 12:23:00 UTC, Learner wrote:
> I was expecting something like going out of scope for that
>
> ```(D)
> import std.stdio;
>
> struct S
> {
>     ~this()
>     {
>         writeln("S is being destructed");
>     }
> }
>
> void main()
> {
> 	S[int] aa;
>     aa[1] = S();
>     aa.remove(1);
>     writeln("Why no dtor call on remove?");
> }
>
> I was expecting S instance dtor called
> S is being destructed
> ```

I think it *is* being called:
```d
import std.stdio;

struct S
{
	int a;
	this(int param){
		a = param;
	}
	~this()
	{
	    writeln("S(",a,") is being destructed");
	}
}

void main()
{
	S[int] aa;
         aa[1] = S(5);
         aa.remove(1);
         aa[1] = S(10);
         //writeln("Why no dtor call on remove?");
}

Output:
S(5) is being destructed
S(10) is being destructed
```
If  the destructors were being executed based on the ending of 
scope, `S(10)` would have been destroyed first.