Web pages should be blazing fast on 25 year old machines, modulo a little lag from more serious crypto. Like, I should be able to build 1998 Mozilla against a modern SSL stack on my Silicon Graphics O2, and browsing the web should be nearly as fast as it was using Netscape Navigator 4 on […]
Today is my twelfth anniversary in Developer Tools at Apple! Still love it, too!
Tagged AppleA 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× […]
Tagged benchmarks, embedded, performance, programming, Raspberry PiFor 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 […]
Tagged embedded, Lisp, programming, Raspberry PiMac 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 […]
Tagged concurrency, Grand Central Dispatch, Mac, NSOperation, programming, Snow Leopard, threadsLast 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.
Tagged Apple, Instruments, Interface Builder, Mac, Snow Leopard, XcodeThe 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 […]
Tagged Cocoa, iPhone, Mac, Objective-C, OOP, programmingVarious 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 […]
Tagged Interface Builder, localization, project model, XcodeIn 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 […]
Tagged agile development, Cocoa, Cocoa bindings, human interface design, Interface Builder, Objective-C, patterns, test-driven development, unit testing, user interface testing, XcodeI’ve occasionally been asked about the appropriate form for properties representing to-many relationships in Objective-C 2.0. Let’s start with the example of a recipe and its ingredients, represented by instances of the Recipe and Ingredient classes. @interface Recipe : NSObject { @private NSMutableSet *_ingredients; } @property (copy) NSSet *ingredients; @end This is a pretty straightforward […]
Tagged Cocoa, Cocoa bindings, Core Data, Key-Value Coding, Key-Value Observing, Objective-C