50 lines
1.1 KiB
Swift
50 lines
1.1 KiB
Swift
//
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// TimelineSegment.swift
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// Pachyderm
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//
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// Created by Shadowfacts on 7/29/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import Foundation
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public struct TimelineSegment<Type: Identifiable> where Type.ID == String {
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private var ids: [String]
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public init(objects: [Type]) {
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self.ids = objects.map { $0.id }
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}
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public mutating func insertAtBeginning(ids: [String]) {
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self.ids.insert(contentsOf: ids, at: 0)
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}
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public mutating func insertAtBeginning(objects: [Type]) {
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insertAtBeginning(ids: objects.map { $0.id })
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}
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public mutating func append(ids: [String]) {
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self.ids.append(contentsOf: ids)
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}
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public mutating func append(objects: [Type]) {
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append(ids: objects.map { $0.id })
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}
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}
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extension TimelineSegment: RandomAccessCollection {
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public typealias Index = Int
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public subscript(index: Int) -> String {
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return ids[index]
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}
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public var startIndex: Int {
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return ids.startIndex
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}
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public var endIndex: Int {
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return ids.endIndex
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}
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}
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