Andrei Alexandrescu, el 19 de noviembre a las 17:13 me escribiste: > Leandro Lucarella wrote: > >dsimcha, el 19 de noviembre a las 23:21 me escribiste: > >>Face it, D is a close to the metal language. Any attempt to define the > >>spec at a > >>purely abstract level without reference to any implementation details, and > >>without > >>leaving certain details implementation defined is absurd. I think people > >>need to > >>face the fact that you can't have close-to-the-metal flexibility and > >>performance > >>and at the same time far-from-the-metal strict separation of specification > >>from > >>implementation details. > > > >Yes, but I think this is a place where you are doing early optimization at > >the expense of usability. You can always do the slice-thinguie yourself if > >you are that needed for speed that you can't afford an extra indirection > >when using an array (which will be the only overhead if T[new] were > >implemented as a pure reference type). > > > >I think the cost here in terms of usability if far higher than the little > >performance you loose, specially when you can overcome the issue for those > >weird cases where you need it. > > I think one aspect that tends to be forgotten is that built-in > arrays are the lowest abstraction - really just one small step above > pointers. Efficiency lost there is lost forever. That's why I > consider the current design adequate and the proposed designs less > so.
I don't think so, slices (a view over somebody elses memory, no appending) should be the lowest level abstraction. > In other words: you can build a more convenient facility on top of > T[], but you couldn't build a more efficient facility on top of a > convenient one. I think D made the right choice with built-in > arrays. I don't. Current built-in arrays are both dynamic arrays and slices, which is what messes all up. But I'll drop the subject, once again, for the sake of... well, everybody ;) -- Leandro Lucarella (AKA luca) http://llucax.com.ar/ ---------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------- SEÑOR BIELSA: CON TODO RESPETO ¿USTED LO VE JUGAR A RIQUELME? -- Crónica TV