- From: fergald via GitHub <sysbot+gh@w3.org>
- Date: Tue, 27 Mar 2018 05:43:09 +0000
- To: public-css-archive@w3.org
Posting discussion about programmatic from #2411 to here.
@fergald
> > In my model the partmap is a dictionary where the values are Set()s of part names. So deleting would be partmap['a'].delete('b') and to remove "a" entirely, delete partmap['a'] (although partmap['a'].clear() would have the same effect).
> > What's the tradeoff between a dictionary of sets and something with an explicit API. Are there operations that dictionaries/sets allow that we wouldn't want or conversely are there operations dictionaries/sets don't allow that we would want and couldn't add later without breaking compatibility? I don't really want to write up an API for something that behaves essentially as a dictionary of sets if I can avoid it.
@rniwa
> Well, browser engines can't observe changes to a dictionary so your proposal as currently stands will make partmap readonly, and any changes to it will be discarded. It's even weirder because it has [SameObject] on it. It means the browser engine has to update the dictionary continuously? I don't think it works because then author scripts can override property descriptors of a dictionary, and all sorts of insanity ensues.
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Received on Tuesday, 27 March 2018 05:43:14 UTC