33 lines
671 B
Swift
33 lines
671 B
Swift
//
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// DatabaseObject+Database.swift
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// Database
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//
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// Created by Brent Simmons on 9/13/17.
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// Copyright © 2017 Ranchero Software. All rights reserved.
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//
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import Foundation
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import RSDatabase
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import Data
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extension Array where Element == DatabaseObject {
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func asTags() -> Set<String>? {
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let tags = Set(self.map { $0 as! String })
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return tags.isEmpty ? nil : tags
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}
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func asAuthors() -> Set<Author>? {
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let authors = Set(self.map { $0 as! Author })
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return authors.isEmpty ? nil : authors
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}
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func asAttachments() -> Set<Attachment>? {
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let attachments = Set(self.map { $0 as! Attachment })
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return attachments.isEmpty ? nil : attachments
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}
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}
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