Merging one Array with Another

[Ilya Yaroshenko via Digitalmars-d-learn]

If x is already sorted

x = x.completeSort(y).uniq.array;

On Friday, 1 May 2015 at 19:30:08 UTC, Ilya Yaroshenko wrote:
> Both variants are wrong because uniq needs sorted ranges.
>
> Probably you need something like that:
>
> x = x.chain(y).sort.uniq.array;
>
> On Friday, 1 May 2015 at 19:08:51 UTC, Per Nordlöw wrote:
>> What's the fastest Phobos-way of doing either
>>
>>    x ~= y; // append
>>    x = x.uniq; // remove duplicates
>>
>> or
>>
>>    x = (x ~ y).uniq; // append and remove duplicates in one go
>>
>> provided that
>>
>>    T[] x, y;
>>
>> ?