New vs length on dymamic array

[Daniel Kozák]

On Monday, 9 November 2020 at 08:06:54 UTC, Andrey wrote:
> Hello,
>
> Are here any differences in creation of dynamic array with 
> known size?
>
>> auto array = new wchar[](111);
>
> and
>
>> wchar[] array;
>> array.length = 111;

In theory
auto array = new wchar[111]; // or new wchar[](111);
should do less work, but in practice I would guess there will be 
almost zero difference in speed.

If you need to create new dynamic array with known size you 
should prefere
auto array = new wchar[111]; // or new wchar[](111);

because it is make much more sense than create empty non 
initialized array and then set it a length