Additional Detail from JIRA
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|
| Votes |
0 |
| Component/s |
Standard Library |
| Labels |
Improvement, AffectsABI, StarterProposal, swift-evolution-proposal-needed |
| Assignee |
None |
| Priority |
Medium |
md5: 20684cd6a789b38a9426158bdf2d0b60
Issue Description:
In Swift 3.0, StrideTo and StrideThrough conform to Sequence, but not Collection.
While they can't be bi-directional or random-access, as the last (or abitrary) element can't necessarily be reached in O( n ) for all strideable types, it should be possible to make them forward-only collections. One straightforward implementation would be to make the index each value zipped with a count (for Comparable purposes).
Once we have conditional conformance, it should be possible to make specific strides (e.g. ones over integers) conform to random access.
Additional Detail from JIRA
md5: 20684cd6a789b38a9426158bdf2d0b60
Issue Description:
In Swift 3.0,
StrideToandStrideThroughconform toSequence, but notCollection.While they can't be bi-directional or random-access, as the last (or abitrary) element can't necessarily be reached in O( n ) for all strideable types, it should be possible to make them forward-only collections. One straightforward implementation would be to make the index each value zipped with a count (for
Comparablepurposes).Once we have conditional conformance, it should be possible to make specific strides (e.g. ones over integers) conform to random access.