Sealed classes - would you want them in D?

[Walter Bright]

On 5/11/2018 8:02 PM, KingJoffrey wrote:
> On Saturday, 12 May 2018 at 00:39:29 UTC, Mike Parker wrote:
>>
>> Again, they're in the same module. From an encapsulation stand point, what 
>> does it matter that private members are within or without any specific set of 
>> curly braces? It only matters if you want to adhere to a purely conceptual 
>> view of encapsulation. From a practical view, it matters not one whit.
>>
>>>
> 
> It matters, in the same sense, that it matters if you have a module, full of 
> functions (which are encapsulated units of code), but your module has a whole 
> bunch of goto statements (not necessarily within a function). Now...you've 
> essentially no idea now which functions are truly encapsulated, and which 
> aren't.

Mike's right. D's encapsulation model is designed around the module. If a module 
is too large to be comprehended, it should be broken up into smaller modules, 
each with its encapsulated functionality.