Lazily Initialized Variables that are Compatible with const/immutable

[Timon Gehr]

On 17.11.22 22:49, Vijay Nayar wrote:
> On Thursday, 17 November 2022 at 15:33:47 UTC, razyk wrote:
>> On 17.11.22 13:04, MorteFeuille123 wrote:
>>>>
> 
> While the solutions from razyk and Ali take care of lazy initialization, 
> with Ali's solution also having the benefit of being thread-safe, none 
> of these methods are actually compatible with `const` or `immutable`, 
> meaning that in any case where lazy initialization is needed, you cannot 
> have a const class, you have to pick one or the other in the current setup.

Well, that's what `const` and `immutable` mean. If you need to restrict 
mutation in some other way, classic encapsulation works.

Note that it is not all that often appropriate to use those qualifiers 
when writing traditional OO code.