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Lucky Dozen

Today is my twelfth anniversary in Developer Tools at Apple! Still love it, too!

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Raspberry Pi vs SPARCstation 20: Fight!

A couple weeks back, I tweeted the following: Turns out a Raspberry Pi now is about 6× as fast as a SPARCstation 20 was 20 years ago. And a Pi 2 is more like 15× as fast. I was a little low in my numbers, too — they’re more like 7× and 16× to 41× […]

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SBCL test failures on ARM

For hacking/prototyping/fun purposes I have a few embedded systems laying around. For example, I have a couple of Raspberry Pi systems, one of the original Raspberry Pi model B boards and one of the new Raspberry Pi 2 model B boards. And on everything, I have the latest Steel Bank Common Lisp building. On my […]

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Sad…

Cupertino is at one edge of the Santa Clara Valley, one of the best places on the continent to grow fruit. This display is in our Whole Foods, one of the (if not the) largest stores they have. All of the brands are local and don’t exist any more, because we paved them over in […]

Milestone

I’ve had my car for 10 years, and my odometer rolled over 100,000 miles earlier today. Time to start thinking about a new car! Maybe a Tesla Model S, in a couple of years…

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When to use NSOperation vs. GCD

Mac OS X has a number of concurrency mechanisms, and that increases with Snow Leopard. In addition to run loops, threads (both Cocoa and POSIX) and operations, Snow Leopard adds Grand Central Dispatch (GCD), a very lightweight way to represent units of work and the style of concurrency they need, and have the system figure […]

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Welcome to Snow Leopard!

Last week, Mac OS X 10.6 Snow Leopard was released! Snow Leopard represents a lot of hard work by a lot of folks at Apple and at seeded third-party developers, and it really shows. Now that it’s shipped, I can actually talk about some of the especially cool things this release has for developers.

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Rebutting Big Nerd Ranch on Objective-C 2.0 dot notation

The Big Nerd Ranch weblog has a new post about Objective-C 2.0 dot notation. They advocate never using it and they’re completely wrong. Given my reaction on Twitter, several people have asked me to write a more in-depth rebuttal. I’ve already addressed when and why you should use Objective-C 2.0 properties and dot notation in […]

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Using “en” instead of “English” for your Xcode project’s development region

Various pieces of Mac OS X and iPhone documentation have said for quite a while that the “preferred” method is now to use ISO-639-1 (two-letter) or ISO-639-2 (three-letter) language codes codes for localization purposes. Out of the box, Xcode’s project templates still use “English” rather than “en” as their default localization. How can you use […]

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Unit testing Cocoa user interfaces: Use Check Methods

In the past, I’ve talked about ways to easily write unit tests for Cocoa applications, including tests for user interfaces using target-action and tests for interfaces using Cocoa bindings. There are some strategies you can apply to make writing tests for Cocoa code even easier, though. They’re just straightforward object-oriented programming, but sometimes we can […]

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