Who wore it better?

[Nick Treleaven via Digitalmars-d]

On Friday, 15 April 2016 at 17:24:19 UTC, Andrei Alexandrescu 
wrote:
> inout(T)[] overlap(T)(inout(T)[] r1, inout(T)[] r2) @trusted

BTW, why is overlap undocumented - is ctfe support a good enough 
reason?
https://github.com/dlang/phobos/blob/v2.071.0/std/array.d#L715

I've thought about implementing something similar, good to know 
it's there. I wonder if there are places in Phobos that could use 
this.

Also, its unittest needs to get undocumented too, it's appearing 
in the previous symbol's documentation instead.