Simpliest NSOrderedSet alternative on linux for a simple Swift-Script?

[Nevin]

If you just need a one-time depublication of an array, you can write something like this:

Algorithms.uniqued() is not ergonomic

If you do want to maintain the order of the remaining elements, here’s an in-place implementation: extension RangeReplaceableCollection where Element: Hashable { mutating func removeDuplicates() { var alreadySeen: Set<Element> = [] removeAll { !alreadySeen.insert($0).inserted } } }

extension RangeReplaceableCollection where Element: Hashable {
  mutating func removeDuplicates() {
    var alreadySeen: Set<Element> = []
    removeAll { !alreadySeen.insert($0).inserted }
  }
}