What's wrong with D's templates?
Walter Bright
newshound1 at digitalmars.com
Mon Dec 21 19:15:04 PST 2009
Yigal Chripun wrote:
> But that doesn't mean the idea itself isn't valid. Perhaps a different
> language with different goals in mind can provide a much simpler non
> convoluted implementation and semantics for the same idea?
> You've shown in the past that you're willing to break backward
> compatibility in the name of progress and experiment with new ideas. You
> can make decisions that the C++ committee will never approve.
>
> Doesn't that mean that this is at least worth a shot?
I believe that D's template constraint feature fills the bill, it does
everything Concepts purported to do, and more, in a simple and easily
explained manner, except check the template body against the constraint.
The latter is, in my not-so-humble opinion, a desirable feature but its
desirability is overwhelmed by the payment in complexity and
constrictions on the Concepts necessary to make it work.
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