Tom Van Cutsem wrote:
2012/10/8 Allen Wirfs-Brock <[email protected]
<mailto:[email protected]>>
Internal abstraction operations (helper functions) are just
editorial devices that reduce the need to duplicate (and perhaps
introducing errors) specification steps. If it makes sense I'll
use one in specifying these traps, but it doesn't make a normative
difference to the specification.
I understand. That's why I think it's perfectly OK to use helpers such
as GetPropertyKeys internally, but to not expose them via the Proxy
API. With my above suggestion, we get a clean spec/trap interface and
at the same time less redundancy in the spec.
Just to make sure, a couple more points to get agreement on:
* Spec internal helper structure matters, both in terms of aesthetics
and best-practices from software engineering, so people will opine on it
from time to time and it's fair game for comment.
* Implementors do look to match the spec where optimization is not
critical, even on internal helpers. This is not just spec-following, of
course -- the logic driving shared helpers being factored out applies to
implementations as well as spec. Or really, spec is just a paper
implementation.
/be
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