Is this a violation of const?

[Timon Gehr]

On 7/30/22 15:19, Salih Dincer wrote:
> On Saturday, 30 July 2022 at 10:02:50 UTC, Timon Gehr wrote:
>>
>> It's a `const` hole, plain and simple.
> 
> This code, which consists of 26 lines, does not compile in DMD 2.087.  I 
> am getting this error:
> 
>> constHole.d(15): Error: mutable method `source.Updater.opCall` is not 
>> callable using a `const` object
> constHole.d(15):        Consider adding `const` or `inout` to 
> source.Updater.opCall
> constHole.d(21): Error: function `source.Updater.opCall(string s)` is 
> not callable using argument types `(string*)`
> constHole.d(21):        cannot pass argument `&s.s` of type `string*` to 
> parameter `string s`
> 
> SDB at 79

Exactly. This is my point. This code does not compile, and neither 
should the original version, because it's doing basically the same thing.