On Mon, 15 Dec 2014 17:37:13 +0000 Tobias Pankrath via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:
> I think we should require byKeys and byValues to iterate the > elements in the same order. Than we can just zip them for the > pairwise iteration. > > Would this impose a performance problem with the current > implementation? i was always sure that they doing that in the same order. at least this was true some time ago, but i see that runtime AA changed since, so i don't sure if it works like this now. but i agree that this requirement should be documented. and i bet it will not, 'cause this will support principle of least astonishment, which is completely alien for D. the only way to get it into the specs is to write the useful library that relies on that behavior and then scream "don't break our code, it's regression!" then it eventually may be turned to requirement and documented.
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