macOS Archive

Objective-C/Cocoa is the dominant language/API for Apple's OS X. Java is the dominant language for Web portals and other Internet services. So wouldn't it make sense for these two technologies to talk to each other? Marcus Zarra walks you through a simple solution to get these two technologies communicating.

Objective-C and Cocoa is the predominate language/framework on the OS X operating system, but it is fairly uncommon otherwise. One way to enable an application written in this language to communicate with applications written for other platforms is via the universal XML. Marcus Zarra walks you through constructing, transmitting, and deconstructing an XML document using Objective-C and Cocoa.

"Thanks to pirates, or rather the fear of them, the Intel edition of Apple's OS X is now a proprietary operating system. Mac developers and power users no longer have the freedom to alter, rebuild, and replace the OS X kernel from source code. Stripped of openness, it no longer possesses the quality that elevated Linux to its status as the second most popular commercial OS."

The recent ruckus about the claimed growing vulnerability of Mac OSX from certain sources has caused an indignant outcry from Mac advocates who claim the stories are mostly media hype. According to an expert in Unix and Linux systems, the outcry is not without justification. Con Zymaris has been working with Unix systems for nearly three decades and for the past 15 years has been running a consultancy on open source software implementation. Zymaris says that, while it is true that a Mac can get infected with a virus, it is not easy and it is not likely to cause much damage. What's more, Mac users don't need to install firewalls and anti-virus software.

"Mac OS X includes many open source projects that contribute to the stability and robustness of the system. While Apple provides working versions of these for both PowerPC and Intel architectures, sometimes you want to build your own to tune performance or enable custom features. Plus, distributing a single binary is often preferable to keeping track of separate, architecture-specific binaries. These objectives can be accomplished by building the project as a Universal Binary, a file that contains code for both the PowerPC and Intel architectures." This article shows how to use Xcode (using Xcode 2.2.1) to construct a make-based project that builds OpenSSL as a Universal Binary."

Robert X. Cringely thinks that Apple will offer virtualization in Mac OS 10.5, but in order to do that, he thinks Apple will need to drop Mach. "So Apple will at least offer the option for users to run a virtualized version of Windows Vista atop OS X. Don't be surprised, either, to see that OS X 10.5 has a new kernel, finally giving up Mach and a big piece of its NeXTstep heritage. I write this for one thing - because OS X has kernel problems and needs some help, especially with swap space. I say it also because of the departure of Avie Tevanian, Apple's chief software technology officer, and the guy who hung onto Mach for so long." The Mach kernel has recently been the target for complaints; esp. in server duties, OSX' kernel lags behind significantly compared to i.e. Linux.