Hello swift-evolution, I've put together a preliminary v2 of the proposal, taking into account feedback expressed on this thread. I would appreciate any comments, suggestions, or criticisms.
https://github.com/austinzheng/swift-evolution/blob/az-edit-89/proposals/0089-rename-string-reflection-init.md If any objections can be worked out quickly, I hope to resubmit this proposal for review early next week. Best, Austin On Fri, May 27, 2016 at 7:50 PM, Patrick Smith via swift-evolution < [email protected]> wrote: > Is there any possibility we can break from this? Especially as: > > 1. ValuePreservingStringConvertible expects its description to be value > preserving, but current Cocoa implementations are not. > 2. ‘Description’ doesn’t really convey the meaning of ‘value preserving’ > in my mind, but is a valuable name for many other use cases. > 3. Swift 3 has a wide range of breaking changes for the better. > 4. With the presence of ValuePreservingStringConvertible, > CustomStringConvertible doesn’t seem to provide much value over > CustomDebugStringConvertible? > > For string interpolation, I imagine the standard library could fall back > to a ‘description’ method for NSObject subclasses. > > Thanks, > > Patrick > > > On 28 May 2016, at 7:49 AM, Dave Abrahams via swift-evolution < > [email protected]> wrote: > > > > > > on Thu May 26 2016, Patrick Smith <[email protected]> wrote: > > > >>> On 27 May 2016, at 2:40 PM, Austin Zheng via swift-evolution < > [email protected]> wrote: > >>> > >>> Any of the NSObject subclass candidates may require their > >>> `description`s to be altered to meet the semantics, which may or may > >>> not be an acceptable breaking change. > >> > >> Do you think it might be worth changing `description` to be named > >> something else? Something more clear, less likely to conflict with > >> ‘real’ properties — ‘description’ doesn’t seem to portray something > >> that is value-preserving. What is the reason for calling it > >> ‘description’? > > > > The main reason was backward compatibility with Cocoa, which already has > > a “description” property. > > > >> Especially if NSObject subclasses won’t fit, then why not have a > >> different method that can be strictly value preserving? (Then > >> `description` can stay being an NSObject thing.) > > > > -- > > Dave > > > > _______________________________________________ > > swift-evolution mailing list > > [email protected] > > https://lists.swift.org/mailman/listinfo/swift-evolution > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution >
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