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SwiftImpl // Patch RangeReplaceableCollection.deduplicated().

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ShikiSuen 2023-12-18 12:16:47 +08:00
parent 1e0ec83dda
commit 1dcdc21411
1 changed files with 10 additions and 0 deletions
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10
Packages/vChewing_SwiftExtension/Sources/SwiftExtension/SwiftExtension.swift
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@ -33,6 +33,16 @@ public extension StringLiteralType {
// Extend the RangeReplaceableCollection to allow it clean duplicated characters. // Extend the RangeReplaceableCollection to allow it clean duplicated characters.
// Ref: https://stackoverflow.com/questions/25738817/ // Ref: https://stackoverflow.com/questions/25738817/
public extension RangeReplaceableCollection where Element: Hashable { public extension RangeReplaceableCollection where Element: Hashable {
/// 使用 NSOrderedSet 處理 class 陣列的「去重複化」。
var classDeduplicated: Self {
NSOrderedSet(array: Array(self)).compactMap { $0 as? Element.Type } as? Self ?? self
// 下述方法有 Bug 會在處理 KeyValuePaired 的時候崩掉，暫時停用。
// var set = Set<Element>()
// return filter { set.insert($0).inserted }
}
/// 去重複化。
/// - Remark: 該方法不適合用來處理 class，除非該 class 遵循 Identifiable 協定。
var deduplicated: Self { var deduplicated: Self {
var set = Set<Element>() var set = Set<Element>()
return filter { set.insert($0).inserted } return filter { set.insert($0).inserted }