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import Foundation
extension Collection where Element: Comparable {
func sorted(ascending: Bool = true, using comparator: (Element) -> (Element) -> ComparisonResult) -> [Element] {
return self.sorted { lhs, rhs in
comparator(lhs)(rhs) == (ascending ? .orderedAscending : .orderedDescending)
let words = ["whisky", "tango", "foxtrot"]
words.sorted(using: String.localizedStandardCompare)
// => ["foxtrot", "tango", "whisky"]
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