Append to 'map' result

[Nicholas Wilson via Digitalmars-d-learn]

On Tuesday, 4 July 2017 at 23:27:25 UTC, Jean-Louis Leroy wrote:
> I want to create a range that consists of the result of a map() 
> followed by a value, e.g.:
>
>   int[] x = [ 1, 2, 3];
>   auto y = map!(x => x * x)(x);
>   auto z = y ~ 99; // how???
>
> I have tried several variations: convert 99 to a dynamic array, 
> to a range, convert range to dynamic array (couldn't even 
> figure that one); to no avail.
>
> Help please...

using
    auto y = x.map!(x => x * x).array;
will work.