> On May 27, 2017, at 10:40 AM, Dave Abrahams via swift-evolution > <swift-evolution@swift.org> wrote: > > A property and an intializer will be added to `String.Index`, exposing > the offset of the index in code units (currently only UTF-16) from the > beginning of the string: > > ```swift > let n: Int = html.endIndex.encodedOffset > let end = String.Index(encodedOffset: n) > assert(end == String.endIndex) > ```
Do you intend to allow users to serialize an `encodedOffset` and deserialize it later, perhaps in a later version of Swift, to represent the same position? If so, I'm not sure how you intend to maintain compatibility once the "currently only UTF-16" notation is no longer true. -- Brent Royal-Gordon Architechies
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