How can I check to see if template type is an array?

[Paul Backus]

On Tuesday, 19 January 2021 at 22:26:52 UTC, Tim wrote:
> Hi all,
>
> I need to be able to check in a template whether the type given 
> is an array type so that I can do some different logic. How can 
> I do this? I would have thought that if(is(T == [])) would 
> work, but no.
>
>
> Thanks in advance

You've almost got it. The correct syntax is `is(T == U[], U)`. 
You can read it as "there exists some type U such that T == U[]".