If you’re a big fan of Rdio — after Spotify, the other major streaming music subscription service, which just happens to have much better iOS apps — and you also have a Google Chromecast, good news: Rdio for iOS now supports Google’s streaming HDTV dongle.
Apple has released the sixth developer preview of the forthcoming Xcode 4. The new update has been posted to Apple’s developer websites for Mac OS X and iOS. Primarily it offers iprofiler a new command-line tool along with a new framework for measuring application performance. It also wouldn’t be your typical Apple software update without additional enhancements and bug fixes from the previous version released last November.
The iprofiler command-line tool helps developers to measure an applications performance without having to launch the Instruments application. However, its output can be analyzed by Instruments later for a complete performance evaluation.
The new framework introduced in the update is called DTPerformanceSession and it allows an application to create performance measurements of itself or other applications.
Complete information about the Xcode 4 Preview 6 and a download link are available to registered Apple Developers through Apple’s Developer website.