Void pointers

[Alex via Digitalmars-d-learn]

On Tuesday, 17 May 2016 at 13:25:34 UTC, ag0aep6g wrote:
> On 05/17/2016 03:14 PM, Alex wrote:
>> For a slice I surely need two numbers. But this should all be, 
>> what I
>> need for a slice. For a iota, I need a maximum, which is not 
>> provided
>> (at least at this moment) to the object containing the 
>> pointer/iota thing.
>
> The slice's length is practically the same as iota's maximum. 
> For slicing a pointer you need the minimum and the maximum, 
> just as with iota. I don't see the difference.
>
> ptr[5 .. 10] vs iota(5, 10) - Surely you need the number 10 in 
> both cases?

Ok cool, maybe I oversee something myself. But let think in an 
example:
There are some objects which make slices. How they make a slice 
is unimportant here, so it makes either ptr[5 .. 10] or iota(5, 
10).
But, if the slicing is made by means of iota, there is no (at 
least no explicit) dependence between the slices, which could be 
made by different objects.
I'm ready to admit, that the process will work with independent 
slicing... In this case, I can omit my void* at all. So, the 
objects, which make slices, don't do this from some object, they 
do this just by calling iota. But this is little bit contra 
intuitive, as I imply a relationship between the sliced parts.
So... at the end of the day this implication exists in my head 
only...