func _offset(of index: Index) -> Int
sSk28InternalCollectionsUtilitiesE7_offset2ofSi5IndexQz_tF
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import InternalCollectionsUtilities
import Swift
protocol RandomAccessCollection<Element> : BidirectionalCollection where Self.Indices : RandomAccessCollection, Self.SubSequence : RandomAccessCollection
A collection that supports efficient random-access index traversal.
associatedtype Index
@frozen struct Int
A signed integer value type.
subscript(_offset offset: Int) -> Element { get }
func _index(at offset: Int) -> Index