Adding a new design constraint to D

[Ola Fosheim Grøstad]

On Thursday, 16 June 2022 at 13:02:11 UTC, Chris Katko wrote:
> Isn't that like saying: adding a uint128 type breaks the 
> language. Because you can detect it?

Depends on whether the language provides a "mandated" mechanism 
in the standard library for dealing with arbitrary bit widths. 
Since *cent* has been known as a potential 128bit type, you 
probably should try to write generic code over integers using 
generic mechanisms where available.

But yes, most extensions at the language level can break things. 
It is less problematic to do it as extensions of the standard 
library with optimizations (that ends up using 128 bit 
instructions). The result would be the same, just non-breaking.