Geppy Parziale, Author at iOS Development

Metal video processing for iOS and tvOS

Real-time video processing is a particular case of digital signal processing. Technologies such as Virtual Reality (VR) and Augmented Reality (AR) strongly rely on real-time video processing to extract semantic...

May 28, 2017

5

by Geppy Parziale

Network Reachability in Swift

Networking

Almost every mobile app needs to connect to the Internet at some point to retrieve data from a host or service or upload new data to it. However, the Internet...

Sep 23, 2016

7

by Geppy Parziale

Interactive View Animations in iOS 10

UIKit

At the last WWDC, Apple introduced a new API to create interactive animations in iOS 10. In this post, I want to show you how to use this new API...

Aug 30, 2016

7

by Geppy Parziale

Convolutional Neural Networks in iOS 10 and macOS

Convolutional Neural Networks in iOS 10 and macOS In iOS 10 and macOS 10.12, Apple introduces new Convolutional Neural Network APIs in the Metal Performance Shaders Framework and the Accelerate...

Jul 12, 2016

10

by Geppy Parziale

Machine Learning for iOS

WWDC16 just ended and Apple left us with new amazing innovative APIs. This year speech recognition, proactive applications, machine learning, user intents, and neural networks have been the most frequent...

Jun 20, 2016

11

by Geppy Parziale

Replicator Layer

In this tutorial I am going to show you how to create a very interesting animation with replicator layers, instances of the CAReplicatorLayer class. After building so many apps and...

Apr 18, 2016

4

by Geppy Parziale

tvOS Focus Engine and Collection View

I recently did some consulting work for a new startup here in San Francisco. I built for them a couple of quite complex UI animations for an Apple TV app....

Mar 15, 2016

8

by Geppy Parziale

Capture Video with AVFoundation and Swift

AVFoundation allows you to capture multimedia data generated by different input sources (camera, microphone, …) and redirect them to any output destination (screen, speakers, render context, …). Some years ago,...

Feb 15, 2016

8

by Geppy Parziale

Metal: Blazing Fast Image Processing

Metal
Swift

Metal allows developers to perform graphics rendering and parallel computing directly on the GPU. Before Metal, OpenGL ES was the framework available on iOS to perform graphics rendering. Instead, parallel...

Jan 5, 2016

9

by Geppy Parziale

Custom View Controller Transitions and Storyboard

A few weeks ago, I wrote this post about the storyboard’s features introduced in iOS 9. In that post, I mentioned that you can now trigger a custom view controller...

Nov 17, 2015

6

by Geppy Parziale

Storyboard Reference, Strong IBOutlet, Scene Dock in iOS 9

In this tutorial, I want to show you some of the new Interface Builder in Xcode 7 features that I believe will change how you think about Storyboards. IBOutlets are...

Aug 11, 2015

4

by Geppy Parziale

UIStackView, Auto Layout and Core Animation

In iOS 9 Apple introduces a new UIStackView, a new class that leverages the power of Auto Layout. UIStackView allows you to lay out a collection of views in either...

Jul 14, 2015

2

by Geppy Parziale

LLDB Expression for Code Injection in Xcode

LLDB (http://lldb.llvm.org), described on the official webpage as a next generation, high-performance debugger, is the debugger that’s currently shipped with Xcode. Just a few years ago, LLDB replaced gdb, and...

Jul 7, 2015

3

by Geppy Parziale

Apple Watch Home Screen UI Animation

Apple Watch is almost here and everybody is waiting to play with this nice new toy. In the last two keynotes, Apple showed us Apple Watch and the amazing UI...

Apr 3, 2015

2

by Geppy Parziale

Swift 1.2 | Faster Executables

Swift 1.2 was announced a couple of weeks ago. Now, you can download it together with Xcode 6.3 beta 2 from the developer portal. As I read about the new...

Feb 24, 2015

2

by Geppy Parziale

Core Data Asynchronous Fetching in Swift

In my previous post, I displayed a new Core Data feature that allows developers to perform batch updates directly on the Persistent Store. This time, I’m going to show how...

Sep 16, 2014

1

by Geppy Parziale

CoreData Batch Updates in Swift

Core Data, one of the most important Cocoa frameworks, received new interesting functionalities in iOS 8 and OS X 10.10. Today, I am going to show you how to perform...

Sep 8, 2014

1

by Geppy Parziale

Singletons in Swift

In this post, I will demonstrate one particular way of creating singletons in Swift. But, before starting, let me just say: Swift is a very powerful programming language that allows...

Jul 2, 2014

1

by Geppy Parziale

Objective-C Selectors in Swift

I was building new exercises in Swift—Apple’s new development language—for our upcoming iOS training class in San Francisco, and when combining Swift and Cocoa Touch, I discovered something really interesting....

Jun 24, 2014

1

by Geppy Parziale

Teaching Swift - Apple’s new development language

This year, the WWDC was amazing. The shear amount of new stuff is overwhelming, and I still can’t believe that most of my wish list is now covered. This year’s...

Jun 13, 2014

1

by Geppy Parziale

All posts by Geppy Parziale

Metal video processing for iOS and tvOS

Network Reachability in Swift

Interactive View Animations in iOS 10

Convolutional Neural Networks in iOS 10 and macOS

Machine Learning for iOS

Replicator Layer

tvOS Focus Engine and Collection View

Capture Video with AVFoundation and Swift

Metal: Blazing Fast Image Processing

Custom View Controller Transitions and Storyboard

Storyboard Reference, Strong IBOutlet, Scene Dock in iOS 9

UIStackView, Auto Layout and Core Animation

LLDB Expression for Code Injection in Xcode

Apple Watch Home Screen UI Animation

Swift 1.2 | Faster Executables

Core Data Asynchronous Fetching in Swift

CoreData Batch Updates in Swift

Singletons in Swift

Objective-C Selectors in Swift

Teaching Swift - Apple’s new development language

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