gonzalezreal

iOS Cell Registration & Reusing with Swift Protocol Extensions and Generics

A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.

Both UITableView and UICollectionView offer a similar API to register custom cell classes:

public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)

ericdke

let arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]

extension Array {
    func splitBy(subSize: Int) -> [[Element]] {
        return 0.stride(to: self.count, by: subSize).map { startIndex in
            let endIndex = startIndex.advancedBy(subSize, limit: self.count)
            return Array(self[startIndex ..< endIndex])
        }
    }
}

natecook1000

protocol StringType {
    var isEmpty: Bool { get }
}

extension String : StringType { }

extension Optional where Wrapped: StringType {
    var isNullOrEmpty: Bool {
        return self?.isEmpty ?? true
    }

Ben-G

import Foundation

class User: NSObject {
  dynamic var name: String?
}

class Observer: NSObject {
  var user: User
  
  init(user: User) {

yutelin

import Foundation
import CryptoSwift

extension String {
 
    func aesEncrypt(key: String, iv: String) throws -> String{
        let data = self.dataUsingEncoding(NSUTF8StringEncoding)
        let enc = try AES(key: key, iv: iv, blockMode:.CBC).encrypt(data!.arrayOfBytes(), padding: PKCS7())
        let encData = NSData(bytes: enc, length: Int(enc.count))
        let base64String: String = encData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0));

TimOliver

@implementation UIScrollView (ZoomToPoint)

/**
 Zooms into the specified point of the scroll view's zoomable content view at the supplied scaled.
 (The zoomable content view is the view that is returned in `viewForZoomingInScrollView:`
 
 @param zoomPoint - In terms of the scroll view's co-ordinate space, the point to zoom to
 @param scale     - A value between minimumZoomScale and maximumZoomScale in which to zoom to.
 @param animated  - Whether the transition is animated, or instant
 

codetalks-new

// Playground - noun: a place where people can play

import UIKit

class SampleCalendarEvent:NSObject{
    let title = "Event\(random()%10000)"
    let day =  random()%7
    let startHour = random()%20
    let durationInHours = random()%5 + 1
    

nuthinking

//
//  UIView+CustomTimingFunction.h
//  Instants
//
//  Created by Christian Giordano on 16/10/2013.
//  Copyright (c) 2013 Christian Giordano. All rights reserved.
//

#import <UIKit/UIKit.h>

ppm

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    [self.transitionCoordinator animateAlongsideTransition:nil completion:^(id<UIViewControllerTransitionCoordinatorContext> context) {
        if ( [context initiallyInteractive] ) return;
        [self _onTransitionEnd:context];
    }];
    [self.transitionCoordinator notifyWhenInteractionEndsUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext> context) {
        [self _onTransitionEnd:context];

toblerpwn

//
//  CustomCollectionFlowLayout.h
//  evilapples
//
//  http://stackoverflow.com/questions/13511733/how-to-make-supplementary-view-float-in-uicollectionview-as-section-headers-do-i
//
//

#import <UIKit/UIKit.h>