I can't help but feel that forcing the "single inheritance of fast field access" and "inheritance of trait functions" into one mechanism would be regrettable.
Would https://github.com/mozilla/rust/issues/10491 address all the requirements? If not, why? On Tue, Mar 11, 2014 at 10:52 PM, Brian Anderson <bander...@mozilla.com>wrote: > The downsides you list are all more or less applicable to this design, > indeed. We are seeing real requirements in real code that indicates that > the current abstraction facilities provided by Rust are efficient enough > for certain demanding use cases (the DOM in particular). > > Here are the identified requirements: > > tree of types (single inheritance) > downcasting > thin pointers > cheap field access > easy upcasting >
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