Rant after trying Rust a bit

[Andrei Alexandrescu via Digitalmars-d]

On 7/24/15 2:56 AM, Walter Bright wrote:
> On 7/23/2015 10:49 PM, Tobias Müller wrote:
>> Walter Bright <newshound2 at digitalmars.com> wrote:
>>> I know a lot of the programming community is sold on exclusive
>>> constraints (C++ concepts, Rust traits) rather than inclusive ones (D
>>> constraints). What I don't see is a lot of experience actually using
>>> them
>>> long term. They may not turn out so well, like ES.
>>
>> Haskell has type classes since ~1990.
>
> Haskell is sometimes described as a bondage-and-discipline language.
> Google it if you don't believe me :-) Such languages have their place
> and adherents, but I don't think D is directed that way.
>
> Exception Specifications were proposed for Java and C++ by smart,
> experienced programmers. It looked great on paper, and in the simple
> examples in the proposals. The unfit nature of it only emerged years
> later. Concepts and traits appear to me to suffer from the same fault.

FWIW I think traits are better than concepts. -- Andrei