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{ Tag Archives } programming

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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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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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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When to use properties & dot notation

I listened to a recent episode of the cocoaFusion: podcast about properties and dot notation today. There were a few interesting points brought up, but I felt a couple of the most important reasons to use @property declarations and dot notation weren’t addressed. The biggest reason I see to use a different notation for both […]

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Not it!

I didn’t write Carrie’s Dots — but I did download it! It was written by Dr. Chris Hanson, a Chris Hanson who’s evidently still in the mid-South. Maybe the next time I get a chance to visit Mississippi, we’ll get to meet up!

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No NSCoder night for me tonight!

I’d like to make it to NSCoder Night tonight, but I just have too much else to do today — again. I won’t be seeing anyone at NSCoder Night next week, either, as I’ll be in San Francisco for the Apple Worldwide Developers Conference! If you’re attending, be sure to find me and say hi!

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No NSCoder night for me tonight!

I’d like to make it to NSCoder Night tonight, but I just have too much else to do today. Hopefully I’ll see everyone there next week!

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CocoaHeads Silicon Valley at Apple on Thursday, May 15, 2008

The next CocoaHeads Silicon Valley meeting will be on Thursday, May 15, 2008 — that’s tonight! — at 7:30 in the Garage 1 meeting room at Infinite Loop 4 on Apple’s main campus. That’s inside and upstairs at Apple’s Infinite Loop campus in Cupertino. See the web site for directions. This month’s main presentation is […]

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No NSCoder Night for me tonight!

I’d like to make it to NSCoder Night tonight, but I won’t be able to as I’ll be looking at a new place. Wish me luck, and have fun everybody!

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