Construct D Arrray with explicit capacity

[arturg via Digitalmars-d-learn]

On Sunday, 30 October 2016 at 18:10:09 UTC, Nordlöw wrote:
> Is there a recommended way to create a builtin D array with a 
> given capacity?
>
> I'm aware of the `.capacity` property.
>
> Is it ok to mutate it?

you cant mutate capacity directly because its only a getter but 
you could use arr.reserve(someVal);