The analogue of "fill-pointer" in D

[John Colvin via Digitalmars-d-learn]

On Monday, 18 May 2015 at 08:21:38 UTC, Dennis Ritchie wrote:
> Hi,
>
> In Common Lisp, there is such a thing as a fill-pointer 
> (Example 5):
> http://www.tutorialspoint.com/lisp/lisp_arrays.htm
>
> Does D some equivalent?

Fill pointers, combined with the various helper functions (e.g. 
vector-push) and vector-extend, perform tasks that D uses slices 
for.

e.g. vector-push-extend is roughly equivalent to the ~= operator, 
given a non-aliased array.

There are important differences, but the functionality overlaps a 
lot.