alemar11

extension UIViewController {

    func rz_smoothlyDeselectRows(tableView tableView: UITableView?) {
        let selectedIndexPaths = tableView?.indexPathsForSelectedRows ?? []

        if let coordinator = transitionCoordinator() {
            coordinator.animateAlongsideTransitionInView(parentViewController?.view, animation: { context in
                selectedIndexPaths.forEach {
                    tableView?.deselectRowAtIndexPath($0, animated: context.isAnimated())
                }

alemar11

extension Dictionary where Value: Equatable {
    /// Returns all keys mapped to the specified value.
    /// ```
    /// let dict = ["A": 1, "B": 2, "C": 3]
    /// let keys = dict.keysForValue(2)
    /// assert(keys == ["B"])
    /// assert(dict["B"] == 2)
    /// ```
    func keysForValue(value: Value) -> [Key] {
        return flatMap { (key: Key, val: Value) -> Key? in

alemar11

Following the tradition from last year, here's my complete list of all interesting features and updates I could find in Apple's OSes, SDKs and developer tools that were announced at this year's WWDC. This is based on the keynotes, the "What's New In ..." presentations and some others, Apple's release notes, and blog posts and tweets that I came across in the last few weeks.

If for some reason you haven't watched the talks yet, I really recommend watching at least the "State of the Union" and the "What's New In" intros for the platforms you're interested in. The unofficial WWDC Mac app is great way to download the videos and keep track of what you've already watched.

If you're interested, here are my WWDC 2015 notes (might be useful if you're planning to drop support for iOS 8 now and start using some iOS 9 APIs).

---

OSX → macOS 10.12 Sierra

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.android">

    ...

    <application
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name">

alemar11

func requestForDuplicatedObjects(moc: NSManagedObjectContext) -> NSFetchRequest {
	let objectsToKeepRequest = NSFetchRequest(entityName: "Recipe")

	// Fetch object IDs representing objects to keep
	let ed = NSExpressionDescription()
	ed.expression = NSExpression.expressionForEvaludatedObject()
	ed.name = "SELF"
	ed.expressionResultType = .ObjectIDAttributeType
	objectsToKeepRequest.propertiesToFetch = [ed]

alemar11

import Foundation



/// A type-safe Key-Value-Observer (KVO).
///
/// Extend the class to be observed to implement `KeyCodable`, e.g.
/// ```
/// extension WKWebView: KeyCodable {
///   enum Key: String {

alemar11

import UIKit

class OnboardingManager {
    private let userDefaults: UserDefaults

    init(userDefaults: UserDefaults = .standard) {
        self.userDefaults = userDefaults
    }

    func presentOnboardingControllerIfNeeded(in viewController: UIViewController) {

alemar11

import Darwin

extension Integer {
    static func makeRandomValue() -> Self {
        var result: Self = 0
        withUnsafeMutablePointer(&result) { resultPtr in
            arc4random_buf(UnsafeMutablePointer(resultPtr), sizeof(Self.self))
        }
        return result
    }

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import Random

random(0 ..< 10)               // Int
random(1 ... 1000_000)         // Int
random(-1000_000 ... 1000_000) // Int
random(Int.min ... Int.max)    // Int

randomMax(UInt64.max)          // UInt64
random(0 ... UInt64.max)       // UInt64
random(1 ... UInt(10))         // UInt

alemar11

package com.gabesechan.android.reusable.receivers;

import java.util.Date;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;

public abstract class PhonecallReceiver extends BroadcastReceiver {