github at esdiscuss.org (2013-07-12T02:27:21.804Z)
On Wed, May 22, 2013 at 9:00 PM, Dmitry Soshnikov <dmitry.soshnikov at gmail.com> wrote: > Sure. The question is not that we can write own abstraction on top of > existing behavior, the question is having it out of the box. Unless the > descriptor map you mention really worth it. Doesn't matter if you or I think the descriptor map is "really worth it", when I pushed for these, part of the consensus hinged on one target, one source.
On Wed, May 22, 2013 at 9:00 PM, Dmitry Soshnikov < dmitry.soshnikov at gmail.com> wrote: > > On Wed, May 22, 2013 at 5:53 PM, Rick Waldron <waldron.rick at gmail.com>wrote: > >> >> >> >> On Wed, May 22, 2013 at 7:48 PM, Dmitry Soshnikov < >> dmitry.soshnikov at gmail.com> wrote: >> >>> Hello, >>> >>> It's very likely it was (should have been I believe) discussed before, >>> and even probably was approved, but I don't see it in the latest draft yet. >>> >> >> The following has been discussed, but... >> >> >>> >>> Just to make sure, the signature of the "assign" and "mixin" method >>> should be: >>> >>> Object.assign(target, source,[source2, ..., sourceN]); >>> Object.mixin(target, source,[source2, ..., sourceN]); >>> >>> Current draft shows me only one source for both the methods. >>> >> >> That's correct. The third argument is being reserved for a descriptor map >> (potentially). Object.assign is not specified to match the _exact_ >> behaviour of any existing object "merge", "extend", "mixin" operation. >> >> > OK, good to know. Can you show a practical example with this (potential) > descriptor map argument? Just wanna make sure it's really more useful than > accepting multiple sources. > > >> This is not unreasonable: >> >> function merge(target, ...sources) { >> return sources.reduce(Object.assign, target); >> } >> > > Sure. The question is not that we can write own abstraction on top of > existing behavior, the question is having it out of the box. Unless the > descriptor map you mention really worth it. > Doesn't matter if you or I think the descriptor map is "really worth it", when I pushed for these, part of the consensus hinged on one target, one source. Rick -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20130522/b67364a0/attachment.html>