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

[Stefan Koch via Digitalmars-d]

On Sunday, 2 July 2017 at 01:51:05 UTC, Timon Gehr wrote:
> On 02.07.2017 03:22, Stefan Koch wrote:
>> ...
>> 
>> I cannot think so a single time I ever used const inout.
>
> I'll boldly claim that this is true mostly because you have 
> never used 'inout'. ;)

affirmative