Open Radar

 
Summary:
The collection protocol in the Swift standard library defines properties 'startIndex' and 'endIndex'. These can be used to construct a range of the indices available in the collection as follows:

let collection: Collection
let range = collection.startIndex..collection.endIndex

It would be nice if the Collection protocol included a property as a shortcut that returns the available index range:

protocol Collection {
    //...
    var indexRange: Range<IndexType> { get }
}

let collection: Collection
let range = collection.indexRange


Currently is is very easy to iterate over a collections values by using the 'for in' syntax. This would enable the same succinct syntax for iterating over the indices without having to construct the index range manually each time:

for index in collection.indexRange {

}

Steps to Reproduce:


Expected Results:


Actual Results:


Version:
Xcode 6 - Beta 2 (6A216f)
Swift version 1.0 (swift-600.0.34.4.8)
OS X 10.10 (14A261i)