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Merge pull request #5069 from danielgindi/fix/remove-swift-algorithms
remove swift-algorithms package in favor of manully importing needed …
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2 changes: 1 addition & 1 deletion
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ChartsDemo-iOS/ChartsDemo-iOS.xcodeproj/xcshareddata/xcschemes/ChartsDemo-iOS-Swift.xcscheme
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2 changes: 1 addition & 1 deletion
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ChartsDemo-iOS/ChartsDemo-iOS.xcodeproj/xcshareddata/xcschemes/ChartsDemo-iOS.xcscheme
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2 changes: 1 addition & 1 deletion
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ChartsDemo-macOS/ChartsDemo-macOS.xcodeproj/xcshareddata/xcschemes/ChartsDemo-macOS.xcscheme
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| //===----------------------------------------------------------------------===// | ||
| // | ||
| // This source file is part of the Swift Algorithms open source project | ||
| // | ||
| // Copyright (c) 2020 Apple Inc. and the Swift project authors | ||
| // Licensed under Apache License v2.0 with Runtime Library Exception | ||
| // | ||
| // See https://swift.org/LICENSE.txt for license information | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
|
|
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| /// A collection wrapper that iterates over the indices and elements of a | ||
| /// collection together. | ||
| struct IndexedCollection<Base: Collection> { | ||
| /// The base collection. | ||
| let base: Base | ||
|
|
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| init(base: Base) { | ||
| self.base = base | ||
| } | ||
| } | ||
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| extension IndexedCollection: Collection { | ||
| /// The element type for an `IndexedCollection` collection. | ||
| typealias Element = (index: Base.Index, element: Base.Element) | ||
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| var startIndex: Base.Index { | ||
| base.startIndex | ||
| } | ||
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| var endIndex: Base.Index { | ||
| base.endIndex | ||
| } | ||
|
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| subscript(position: Base.Index) -> Element { | ||
| (index: position, element: base[position]) | ||
| } | ||
|
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| func index(after i: Base.Index) -> Base.Index { | ||
| base.index(after: i) | ||
| } | ||
|
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| func index(_ i: Base.Index, offsetBy distance: Int) -> Base.Index { | ||
| base.index(i, offsetBy: distance) | ||
| } | ||
|
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| func index( | ||
| _ i: Base.Index, | ||
| offsetBy distance: Int, | ||
| limitedBy limit: Base.Index | ||
| ) -> Base.Index? { | ||
| base.index(i, offsetBy: distance, limitedBy: limit) | ||
| } | ||
|
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| func distance(from start: Base.Index, to end: Base.Index) -> Int { | ||
| base.distance(from: start, to: end) | ||
| } | ||
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| var indices: Base.Indices { | ||
| base.indices | ||
| } | ||
| } | ||
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| //extension IndexedCollection: BidirectionalCollection | ||
| // where Base: BidirectionalCollection | ||
| //{ | ||
| // func index(before i: Base.Index) -> Base.Index { | ||
| // base.index(before: i) | ||
| // } | ||
| //} | ||
| // | ||
| //extension IndexedCollection: RandomAccessCollection | ||
| // where Base: RandomAccessCollection {} | ||
| // | ||
| //extension IndexedCollection: LazySequenceProtocol, LazyCollectionProtocol | ||
| // where Base: LazySequenceProtocol {} | ||
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| //===----------------------------------------------------------------------===// | ||
| // indexed() | ||
| //===----------------------------------------------------------------------===// | ||
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| extension Collection { | ||
| /// Returns a collection of pairs *(i, x)*, where *i* represents an index of | ||
| /// the collection, and *x* represents an element. | ||
| /// | ||
| /// This example iterates over the indices and elements of a set, building an | ||
| /// array consisting of indices of names with five or fewer letters. | ||
| /// | ||
| /// let names: Set = ["Sofia", "Camilla", "Martina", "Mateo", "Nicolás"] | ||
| /// var shorterIndices: [Set<String>.Index] = [] | ||
| /// for (i, name) in names.indexed() { | ||
| /// if name.count <= 5 { | ||
| /// shorterIndices.append(i) | ||
| /// } | ||
| /// } | ||
| /// | ||
| /// Returns: A collection of paired indices and elements of this collection. | ||
| func indexed() -> IndexedCollection<Self> { | ||
| IndexedCollection(base: self) | ||
| } | ||
| } |
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