Colin Eberhardt

Colin Eberhardt

I lead the Scott Logic R&D team and am a prolific technical author, blogger and speaker on a range of technologies. For a number of years I worked with the Microsoft stack of technologies, including WPF, WCF, Silverlight and Windows Phone. More recently I have diversified to include HTML5, JavaScript and iOS development.

I am a member of the Ray Wenderlich tutorial team, where I publish my iOS articles. I write for the CodeProject website and have also written for Microsoft's MSDN magazine. I contribute to a number of open source projects, including PropertyCross which I run alongside Chris Price.

Featured Articles

MVVM with ReactiveCocoa

on 07 Jul 2014

I've recently had a two-part tutorial published on Ray Wenderlich's website that details how ReactiveCocoa can be used to implement the MVVM pattern within iOS applications.

Swift Sequences and Lazy Evaluation

on 26 Jun 2014

In this blog post I want to take a quick look at the Swift Sequence protocol, which forms the basis for the for-in loop, and see how this allows you to write code that performs sequence operations that are only evaluated on-demand.

A Colour Analysis of the Apple App Store

on 12 Apr 2014

This blog post presents the result of analysing 250,000 screenshots from the Apple App Store, looking at hue, lightness and saturation histograms for each category.

A Statistical Analysis of the Apple App Store

on 20 Mar 2014

The App Store continues its rapid growth, with approximately 300,000 apps added each year. I decided it would be fun to download as much app metadata as possible in order to see what patterns and trends I could find. This blog post describes the results.

Articles

Functional Swift and Memoization

on 22 Sep 2014

This post is a continuation of my previous which looked at implementing Conway’s Game of Life using functional techniques. Here I look at how memoization can be used to cache the return value of a function in order to improve performance.

Swift By Tutorials is Published

on 18 Sep 2014

Apple released the first public beta of the Swift programming language just over three months ago. Within days of the release myself and Matt Galloway started working on our book Swift by Tutorials, which as of yesterday is finally finished and shipping!

The Game of Life with Functional Swift

on 10 Sep 2014

This blog post shows an implementation of Conway’s Game of Life using functional techniques in Swift. This results in code which is a clear and concise representation of the game’s logic. I also take a closer look at ranges, intervals, the pattern match operator, ~= and how local functions help...

Swift Adoption Statistics

on 01 Aug 2014

It was just two months ago that Apple took us by surprise in releasing the Swift programming language. This blog post reflects on the first few months of Swift adoption.

A Statistical Comparison of the iOS and Android Stores

on 10 Jul 2014

A few months ago I published a blog post which showed the results of analysing the meta-data of 75,000 apps from the iTunes App Store. This blog post continues the analysis by adding 60,000 Android apps into the mix.

MVVM with ReactiveCocoa

on 07 Jul 2014

I've recently had a two-part tutorial published on Ray Wenderlich's website that details how ReactiveCocoa can be used to implement the MVVM pattern within iOS applications.

Swift Sequences and Lazy Evaluation

on 26 Jun 2014

In this blog post I want to take a quick look at the Swift Sequence protocol, which forms the basis for the for-in loop, and see how this allows you to write code that performs sequence operations that are only evaluated on-demand.

White Paper - HTML5 At Enterprise Scale

on 19 May 2014

Moving from desktop or plugin technologies (Flex, Silverlight, Java Applets) to HTML5 is a challenge for developers of large-scale enterprise applications. This White Paper discusses the challenges and offers potential solutions.

A Colour Analysis of the Apple App Store

on 12 Apr 2014

This blog post presents the result of analysing 250,000 screenshots from the Apple App Store, looking at hue, lightness and saturation histograms for each category.

A Statistical Analysis of the Apple App Store

on 20 Mar 2014

The App Store continues its rapid growth, with approximately 300,000 apps added each year. I decided it would be fun to download as much app metadata as possible in order to see what patterns and trends I could find. This blog post describes the results.

Simulating Accelerometer and Location data for iOS

on 19 Mar 2014

This blog post looks at how to simulate accelerometer and location data so that you can test iOS apps without the need for a physical device. The simulated data is provided by an interactive UI which allows you to rotate the phone and mark paths on a map which can then be replayed.

ReactiveCocoa - The Definitive Guide

on 13 Mar 2014

It feels like everyone in the iOS community is talking about ReactiveCocoa at the moment. In this blog post I talk briefly about what ReactiveCocoa is and the 'Definitive Guide' which I wrote for raywenderlich.com

PropertyCross 1.3 Released

on 31 Jan 2014

PropertyCross has just announced a v1.3 release, which includes two new frameworks, a number of updates and an improved build system.

An Interactive Tab Bar Controller Transition

on 26 Sep 2013

This blog post looks at creating an interactive tab bar controller transition, where you can swipe left and right to navigate between the tabs. The transition itself is a 'paperfold' effect - very pretty!

Creating a custom flip view controller transition

on 20 Sep 2013

With iOS 7 Apple introduced a new set of APIs for creating custom View Controller transitions. In this blog post I look at how to create a custom 'flip' transition, giving the impression of a turning page.