Author Archives: Graham

About Graham

I make it faster and easier for you to create high-quality code.

Confine ALL the things!

Posted on 2012-03-23 by Graham

I was talking with Saul Mora at lunchtime about NSManagedObjectContext thread confinement. We launched into an interesting thought experiment: what if every object ran on its own thread? This would be interesting. You can never use a method that returns … Continue reading →

Posted in code-level, software-engineering | 4 Comments

How to TDD with CATCH

Posted on 2012-03-13 by Graham

Plenty of people have asked me about the TDD framework I use. While the book Test-Driven iOS Development has code using OCUnit (for pragmatic, and previously-covered, reasons); I am currently more frequently to be discovered using Phil Nash’s CATCH framework. … Continue reading →

Posted in code-level, software-engineering, TDD | 1 Comment

The security apprentice

Posted on 2012-03-12 by Graham

This originally appeared in a post at Sophos’ Naked Security blog. There have been two recent occasions on which my computing life has been influenced by Lord Sugar, the business mogul in charge of Amstrad and star of BBC One’s … Continue reading →

Posted in Uncategorized | Comments Off

On advertising’s place in the tech industry

Posted on 2012-03-01 by Graham

Dave Winer said the way is open for a non-ad-supported tech sector: The tech industry has been absorbed by the ad industry, and vice versa. However, there is, imho, still room for a tech industry that is not merged with … Continue reading →

Posted in Business | 4 Comments

Why we don’t trust `-retainCount`

Posted on 2012-02-23 by Graham

I’m pretty sure @bbum must have worn through a few keyboards telling users of StackOverflow not to rely on the value of an Objective-C object’s -retainCount. Why? When we create an object, it has a retain count of 1, right? … Continue reading →

Posted in code-level, Foundation, iPad, iPhone, Mac | Comments Off

Synthesized ivars are private

Posted on 2012-02-21 by Graham

Perhaps this isn’t news. Perhaps it doesn’t matter because you’ve provided public accessors. But here are the results anyway. #import <Foundation/Foundation.h> @interface A: NSObject @property (nonatomic, assign) int a; @end @interface B: A – (int)differentGetter; @end @interface C: NSObject @property … Continue reading →

Posted in Uncategorized | Comments Off

Is it an anti-pattern to use properties everywhere?

Posted on 2012-02-17 by Graham

I’ve seen questions about whether to always provide accessors for ivars, and recommendations, such as in akosma software’s ObjC code standards, that say Whenever possible, do not specify ivars in the header file; use only @property and @synthesize statements instead. … Continue reading →

Posted in code-level | 10 Comments

Some LightReading about mobile app security

Posted on 2012-02-10 by Graham

[This article was co-written with @securityninja] If mobile app security is failing, it’s up to the security industry, not developers, to repair it. An article published yesterday at security news site DarkReading announces “Developers not applying secure development life cycle … Continue reading →

Posted in Uncategorized | 2 Comments

Building an object-oriented dispatch system in Objective-C

Posted on 2012-02-09 by Graham

iTunes was messing about rebuilding the device I was trying to use for development, so I had time over lunch to write a new message dispatch system in the Objective-C language. “But wait,” you say, “Objective-C already has a message … Continue reading →

Posted in code-level, OOP, Uncategorized | Comments Off

On privacy, hashing, and your customers

Posted on 2012-02-08 by Graham

I’ve talked before about not being a dick when it comes to dealing with private data and personally-identifying information. It seems events have conspired to make it worth diving into some more detail. Only collect data you need to collect … Continue reading →

Posted in Business, Crypto, Data Leakage, Privacy, Responsibility | Comments Off