What's the deal with "Warning: explicit element-wise assignment..."

[Tobias Pankrath via Digitalmars-d]

On Tuesday, 15 April 2014 at 16:02:33 UTC, Steven Schveighoffer 
wrote:
> On Tue, 15 Apr 2014 11:59:31 -0400, Steven Schveighoffer 
> <schveiguy at yahoo.com> wrote:
>
>> On the left hand side, the [] operator is special *for arrays* 
>> in that it denotes you want to do an element-wise copy. On the 
>> right hand side, this is not the case, [] is simply an 
>> operator. It's a no-op if the rhs is an array, since [] just 
>> gets the array again.
>
> Sorry, I had this wrong. The [] on the left hand side is 
> actually part of the []= operator. But on the right hand side, 
> it simply is a [] operator, not tied to the =. I erroneously 
> thought the arr[] = ... syntax was special for arrays, but I 
> forgot that it's simply another operator.
>
> My opinion is still the same.
>
> -Steve

Maybe we should require the []= operator to be written exactly 
like this.

t[] = v;

t.opSlice.opAssign(v) or t.opSliceAssign(v)? I bet most people 
(me included) will get this wrong 50% of the time.