isthisjoe

1. Open Xcode. File > New > Package
   1. Select Library > Next
   2. Choose the location that will be your root folder, enter the Package name > Create
   3. Rename the module created for you to something different than the Package and Product name.
   4. Under [Package name] > Sources > [Package Name] > [Package Name].swift, replace with this SwiftUI view for later use:

import SwiftUI

public struct TestLabel: View {
 public init() {}

isthisjoe

import AppKit
import AVFoundation

class MovieWriter: NSObject {
    func writeImagesAsMovie(_ allImages: [NSImage], videoPath: String, videoSize: CGSize, videoFPS: Int32) {
        // Create AVAssetWriter to write video
        guard let assetWriter = createAssetWriter(videoPath, size: videoSize) else {
            print("Error converting images to video: AVAssetWriter not created")
            return
        }

isthisjoe

:: UIAlertController ::

let alertController = UIAlertController(title: "Default Style", message: "A standard alert.", preferredStyle: .Alert)

let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) { (action) in
    // ...
}
alertController.addAction(cancelAction)

let destroyAction = UIAlertAction(title: "Destroy", style: .Destructive) { (action) in

isthisjoe

:: Swift iOS Version Checking ::

let iOS7 = floor(NSFoundationVersionNumber) <= floor(NSFoundationVersionNumber_iOS_7_1)
let iOS8 = floor(NSFoundationVersionNumber) > floor(NSFoundationVersionNumber_iOS_7_1)

:: Replace Magic Strings with Enumerations in Swift ::

enum SegueIdentifier: String {
	case OtherScreenSegue1 = "otherScreenSegue1"
	case OtherScreenSegue2 = "otherScreenSegue2"

isthisjoe

+ (NSURL*)getPreSignedURLForKey:(NSString*)key
{
    AmazonS3Client *s3 = [[AmazonS3Client alloc] initWithAccessKey:kHBAmazonS3AccessKeyID withSecretKey:kHBAmazonS3SecretKey];
    //Set up the request
    S3GetPreSignedURLRequest * request = [[S3GetPreSignedURLRequest alloc] init];
    request.bucket = kHBAmazonS3Bucket;
    request.key = key;
    request.expires = [NSDate dateWithTimeIntervalSinceNow:(NSTimeInterval)kHBAmazonPreSignedRequestExpireSeconds];
    NSURL *url = [s3 getPreSignedURL: request];
    return url;

isthisjoe

- (void)setupRefreshControl
{
    UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
    refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"Pull to refresh"];
    [refreshControl addTarget:self
                       action:@selector(refreshControlAction:)
             forControlEvents:UIControlEventValueChanged];
    self.refreshControl = refreshControl;
}

isthisjoe

platform :ios, '5.1'
pod 'JSONKit',       '~> 1.4'
pod 'Reachability',  '~> 3.0.0'
pod 'AFIncrementalStore', '~> 0.3.2'
pod 'SDWebImage', '~> 3.1'

isthisjoe

// assume self.managedObjectContext is a main queue context
NSManagedObjectContext *backgroundContext = [[NSManagedObjectContext alloc] initWithConcurrencyType:NSPrivateQueueConcurrencyType];
[backgroundContext performBlock:^{
    // do your fetch - e.g. executeFetchRequest
    NSManagedObjectID *objID = [someManagedObject objectID];
    [self.managedObjectContext performBlock:^{
        NSManagedObject *mainManagedObject = [self.managedObjectContext objectWithID:objID];
        //  do something now with this managed object in the main context
    }];
}];