Apple have open sourced libdispatch, the userspace library behind Grand Central Dispatch. http://libdispatch.macosforge.org/
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Apple have open sourced libdispatch, the userspace library behind Grand Central Dispatch. http://libdispatch.macosforge.org/