Rant after trying Rust a bit

[Walter Bright via Digitalmars-d]

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.