Ruby 3.0 to have immutable strings by default / C++ heading towards "generic all the time".

[Enamex via Digitalmars-d]

On Thursday, 20 August 2015 at 22:07:10 UTC, John Carter wrote:
> https://twitter.com/yukihiro_matz/status/634386185507311616
>
> Pity that concepts looks to be a very painful syntax for 
> expressing what D does so clearly.

One big difference is that C++1z concepts are supposed to allow 
looking for external functions, not only methods. That would 
require some kind of principled hijacking of templates in Dlang 
(or else the constraint template would keep looking for the 
functions, called by ufcs, either inside the type of in the 
templates declaration position). I haven't managed to work that 
out yet except by using mixins :/