mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
3de27d2179
Array's getObjects:range: needs to fill the supplied buffer without incrementing the reference count. For that reason, and to fulfill lifetime expectations for Array elements that are computed dynamically (e.g. from value types that are BridgedToObjectiveC), we maintain a cache of converted objects associated with each Array. Swift SVN r16105
41 lines
1019 B
Swift
41 lines
1019 B
Swift
//===--- Repeat.swift - A Collection that repeats a value N times ---------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See http://swift.org/LICENSE.txt for license information
|
|
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
struct Repeat<T> : Collection {
|
|
typealias IndexType = Int
|
|
|
|
init(count: Int, repeatedValue: T) {
|
|
self.count = count
|
|
self.repeatedValue = repeatedValue
|
|
}
|
|
|
|
var startIndex: IndexType {
|
|
return 0
|
|
}
|
|
|
|
var endIndex: IndexType {
|
|
return count
|
|
}
|
|
|
|
func generate() -> IndexingGenerator<Repeat> {
|
|
return IndexingGenerator(self)
|
|
}
|
|
|
|
subscript(i: Int) -> T {
|
|
assert(i < count, "Index out of range")
|
|
return repeatedValue
|
|
}
|
|
|
|
var count: Int
|
|
let repeatedValue: T
|
|
}
|
|
|