What's happening with the `in` storage class

[Yuxuan Shui]

On Saturday, 9 June 2018 at 07:56:08 UTC, Jonathan M Davis wrote:
> Now that it is defined with DIP 1000, it seems like pretty much 
> everyone trying to use it has a hard time understanding it at 
> first (at least beyond the really simple cases).

It might have been because that the DIP is written in a somewhat 
confusing way.

> - Jonathan M Davis