hlung
/ DynamicCodingKey.swift
Last active
June 27, 2020 06:39
Decodes multiple layers of nested containers using a String array for key path. (It's actually cleaner to declare another struct for the nested data. But this is to show how this can be done.)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import Foundation | |
| // Allows defining CodingKey from String | |
| struct DynamicCodingKey: CodingKey { | |
| var intValue: Int? | |
| var stringValue: String | |
| init?(intValue: Int) { | |
| assertionFailure("Not implemented") | |
| return nil |
TiagoBras
/ DispatchQueue+Extensions.swift
Created
April 18, 2019 11:07
DispatchQueue extension for situations where one needs to run an expensive operation in background and then use its result in the main thread
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import Foundation | |
| extension DispatchQueue { | |
| func asyncConsumeInMainQueue<T>( | |
| work: @escaping () throws -> T, | |
| mainSuccess: @escaping (T) -> Void, | |
| mainError: @escaping (Error) -> Void) { | |
| async { | |
| do { | |
| let result = try work() |
Sorix
/ FRCCollectionViewDataSource.swift
Created
October 10, 2017 23:15
NSFetchedResultsControllerDelegate for UICollectionView
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| protocol FRCCollectionViewDelegate: class { | |
| func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell | |
| } | |
| class FRCCollectionViewDataSource<FetchRequestResult: NSFetchRequestResult>: NSObject, UICollectionViewDataSource, NSFetchedResultsControllerDelegate { | |
| let frc: NSFetchedResultsController<FetchRequestResult> | |
| weak var collectionView: UICollectionView? | |
| weak var delegate: FRCCollectionViewDelegate? | |