iota where step is a function

[anonymouse]

On Thursday, 25 May 2023 at 00:18:44 UTC, anonymouse wrote:
> On Wednesday, 24 May 2023 at 16:39:36 UTC, Ben Jones wrote:
>> Is there a range like iota in phobos where step is a function? 
>>  I want to specify begin/end and have the "step" be next = 
>> fun(prev).  Should be easy to write, but don't want to 
>> reinvent the wheel.
> ````D
> import std.stdio;
> import std.range: iota;
>
> void main()
> {
>     iota(10, 0, -1).writeln;
> }
> ````

I think I misunderstood what was being asked here.