Why do "const inout" and "const inout shared" exist?

[Andrei Alexandrescu via Digitalmars-d]

On 07/02/2017 04:08 PM, Jack Stouffer wrote:
> On Sunday, 2 July 2017 at 18:49:29 UTC, Walter Bright wrote:
>> Thank you. This explanation makes sense (given that applying const to 
>> immutable => immutable).
> 
> Since seemly everyone is confused about it, this topic looks like a 
> great subject for a blog post.

We have top people on that (i.e. Timon!).

Also, I just improved the spec: 
https://github.com/dlang/dlang.org/pull/1787.


Andrei