How to import the types mapresult and filterresult

[Mike Parker]

On Tuesday, 18 May 2021 at 12:15:25 UTC, Alain De Vos wrote:
> Something like:
> import X.Y.Z:mapresult ;

You don't. The types returned by map, filter, and other 
algorithms are not public. They're "Voldemort", or anonymous, 
types. Instances aren't generally intended to be stored, but 
rather to be completely consumed at the end of a chain of 
function calls.

But if you need to store one in a local variable temporarily, you 
can use `auto`:

```d
auto result = map...
```