[fpc-pascal] Feature announcement: Dynamic array extensions

[Michael Van Canneyt]

On Fri, 25 May 2018, Sven Barth via fpc-pascal wrote:

> Yes, that is what it does. Though a possible optimization would be that the
> compiler detects "dynarr := dynarr + [elem]" and converts it to
> "Insert(elem, dynarr, High(dynarr))".
>
>
>> Since dynamic array helpers work could you expose a function that adds an
>> element to the array (an grows it if needed) so we could make helpers for
>> it? Pushing a value to an array is perhaps the most common function used
>> for lists so it makes sense to get that right imo.
>>
>
> That function already exists and is called Insert() (see above).

Nice. I didn't know Insert() could be used to append to the end of a string.

One learns every day ! One for the documentation :-)

To be clear: for strings you can do

var
   S : String;

begin
   S:='123';
   Insert('456',S,Length(S)+2);
   Writeln(S);
end.

and it will append. Is the same true for dynamic arrays ? 
i.e. any insert position >= length will do an append ?

Michael.