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{ Monthly Archives } May 2012

App security consultancy from your favourite boffin

I’m very excited to soon be joining the ranks of Agant Ltd, working on some great apps with an awesome team of people. I’ll be bringing with me my favourite title, Smartphone Security Boffin. Any development team can benefit from a security boffin, but I’m also very excited to be in product development with the […]

Class clusters, placeholder objects, value-oriented programming, and all that good stuff.

Have you ever seen this exception in your crash log? 2012-05-29 17:55:37.240 Untitled 2[5084:707] *** Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘*** -length only defined for abstract class. Define -[NSPlaceholderString length]!’ What’s that NSPlaceholderString class? Leaving aside NSMutableString for a moment[*], there’s no way for a developer who’s got an instance of an […]

Is privacy a security feature?

I’ve spoken a lot about privacy recently: mainly because it’s an important problem. Important enough to hit the headlines; important enough for trade associations and independent developers alike to make a priority. Whether it’s talks at conferences, or guiding people on designing or implementing their apps, there’s been a lot of privacy involved. But is […]

Thoughts on Tech Conferences

This post is being, um, posted from the venue for GOTO Copenhagen 2012. It’s the end result of a few months of reflection on what I get out of conferences, what I want to get out of conferences, what I put into (and want to put into) conferences and the position of tech conferences in […]

BrowseOverflow as a Code Kata

This article was originally posted over at InformIT. My goal in writing Test-Driven iOS Development was to take readers from not knowing how to write a test for their iOS apps, to understanding the TDD workflow and how it could work for them. That mirrored the journey that I had taken in learning about test-driven […]

Using GNUstep libraries with Xcode

I was recently asked about building projects that use GNUstep from Xcode. The fact is, it’s incredibly easy. By default, GNUstep on Mac OS X installs its libraries to /usr/local/lib and its frameworks to /Library/Frameworks. Therefore if you want to include GNUstep-base additions, you just hit the + button in your target’s “link binary with […]

Building a unit test target with GNUstep make

Just a quick note on how I build my test tools (they run separately, either by manual invocation or via CI) when I’m working in GNUstep. Firstly, you’ll need Catch. Then given test files that look like this: #define CATCH_CONFIG_MAIN #include “catch.hpp” #import TEST_CASE(“Using foundation”, “I should be able to use Foundation classes from […]

So you’re off to WWDC

Jeff has updated his excellent WWDC first-timer’s guide, and I thought I’d augment that with some things I’ve noticed. The easiest and cheapest way to get from SFO to San Francisco is via BART. Once you get to the arrivals hall, the BART station is well signposted. If you follow Jeff’s advice and stay within […]

Metacognition-driven development

To find out what techniques work for you in a field of practice, you often need to think about how you think. To decide what it is that drives your learning processes, and then adapt your practices to suit that. For example, I tend to get more done if I’m already getting something done. Success […]

Messing about with Clang

I’ve been reading the Smalltalk-80 blue book (pdf) recently, and started to wonder what a Smalltalk style object browser for Objective-C would look like. Not just from the perspective of presenting the information that makes up Objective-C classes in novel ways (though this is something I’ve discussed with Saul Mora at great length in the […]