Deduct and return class type

[Paul Backus]

On Saturday, 23 January 2021 at 07:17:38 UTC, Виталий Фадеев 
wrote:
> Where source ?
> Where deduction implementation ?

Here:

https://github.com/dlang/dmd/blob/v2.095.0/src/dmd/dtemplate.d#L1308