Learn how to remove the previous card from your phone.Make sure the phone is switched off. 1. At the top corner of your phone, put the nail of your index finger in the seam between the screenframe and the back cover. Press the middle of the back cover, and bend the cover to loosen the tophooks.
While the Objective-C traditionally had no garbage collection, with the release of OS X 10.5 in 2007 Apple introduced garbage collection for Objective-C 2.0, using an in-house developed runtime collector.
Objective Function: A mathematical function of decision variables use to express the objective of a problem. The goal is to either maximize or minimize the objective function. It is the expression of quantity the decision maker wishes to optimize.