Re: .sort vs sort(): std.algorithm not up to the task?

[Stanislav Blinov via Digitalmars-d-learn]

On Thursday, 8 June 2017 at 02:25:17 UTC, Jonathan M Davis wrote:
Oh I see, the was error related to iteration, not sorting.

Ranges do not support iterating with an index. The workaround 
if you want to have an index with ranges and foreach, then you 
should use lockstep:

http://dlang.org/phobos/std_range.html#lockstep

e.g.

foreach(i, v; lockstep(iota!size_t(0), s))
{}

or

foreach(i, v; lockstep(iota(0), s))
{}

There's an enumerate(): 
https://dlang.org/phobos/std_range.html#enumerate

import std.algorithm : sort;
import std.range : enumerate;

foreach(i, k; aa.keys.sort().enumerate) {
    /* ... */
}