C is Brittle D is Plastic

[Quirin Schroll]

On Sunday, 22 March 2026 at 11:56:00 UTC, Dennis wrote:
> On Sunday, 22 March 2026 at 04:47:41 UTC, Walter Bright wrote:
>> Another source of slowdown in C that became apparent over the 
>> years is C is a brittle language, rather than a plastic one.
>
> Another example where D shines in this regard is UFCS allowing 
> you to turn fields into methods and vice versa:
>
> ```D
> struct S
> {
>     ubyte* ptr;
>     ubyte* end;
>     size_t length() => end - ptr;
> }
> ```
>
> ```D
> struct S
> {
>     ubyte* ptr;
>     size_t length;
>     ubyte* end() => ptr + length;
> }
> ```
>
> You don't need to change `.end` into `.end()`, `.end` works on 
> both fields and methods.

That isn’t UFCS, that’s just empty parentheses being optional. 
Those are completely orthogonal language concepts.