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Have fun! Write code! The more you practice and the more you build stuff, the more you will learn. Every new project brings new opportunities with it, and there s no substitute for hands-on experience. Feel free to continue tweaking MediaGrabber; you may have some new ideas about how to make it more powerful or useful to you. If so, go for it! Or, while reading this book, you might have come up with a cool app idea on your own. Great! The wonderful thing about BlackBerry development is its combination of a powerful platform, low barrier to entry, and immediate impact. If you write a good app and put it out where everyone can see it, you will be noticed. Keep in mind that everything changes. Future versions of the platform will come along, offering still more features and capabilities. Keep your eyes open, find out what s new, and calculate what would be useful. At the same time, hold on to the essentials. Now that you have mastered the key aspects of BlackBerry software development, you should be able to incorporate new information without losing sight of the critical elements of an application. The journey never stops. Keep climbing a little higher you never know what sight awaits you over the crest.

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There are a number of solutions for mass deployment and patch management in addition to those we cover from a technical point of view in this These include LANrev, Puppet, Radmind, and even Deep Freeze by Faronics Deep Freeze can be used to place a computer into a frozen state The system can then be thawed for changes and rebooted to place it back into a frozen state This is typically reserved for lab environments LANrev is a popular product that supports Mac, Windows, and Linux Radmind is a suite of command-line tools you can use to manage the software installation and configuration state across a group of computers It provides a very complex toolset for ensuring consistent deployments across an arbitrary number of clients.

Radmind can detect and manage changes to systems via a loadset, a predefined list of contents that you can compare to what s resident on clients and then use to replace, add, or remove client files Using loadsets and overloads (listings of files, directories, and items associated with them), administrators can install, customize, and update software Radmind is very good at keeping a collection of systems synchronized with a master environment----a capability you might need in a lab, for example Radmind is slowly being uprooted by products like Casper and Package-based imaging solutions The original developers have moved on from this tool However, it still has a religious user base Puppet is an open-source administration and policy framework, written in Ruby and used for numerous types of system automations.

3 discussed how BlackBerry devices offer a range of codecs to play back audio and video content. This appendix provides some more details on codec support for a range of popular BlackBerry devices. Please see Table A-1 for this information. Notes applying to each device/codec combination follow the table.

Radmind and Puppet take a similar approach to synchronizing systems with a master----both alter a remote set of files, but they use different methods Radmind looks at file systems; Puppet uses facters, which are similar to the loadsets defined in Ruby, but far more granular Puppet then employs a client library, which houses instructions for reaching predefined states Because Radmind is great at maintaining file systems and Puppet is great at, and highly configurable for managing finely grained states, you ll find both useful For example, you can use Radmind to manage certain directories you want to remain static, such as those involved in deployments of the Developer Tools from Mac OS X Then you could put Puppet to work to let users change settings in a non-managed client environment while still allowing you to maintain some control.

Reference duck types are created using the Builder pattern Once created, reference duck types have a slight performance advantage, as they do not need the overhead of running the eval statement in the Builder pattern implementation Reference duck types can share instances with multiple object instances because you are assigning references Value duck types should be considered as long-term serializable objects where the state and code can be serialized Value duck types are created using the Builder pattern Value duck types are slightly slower than reference duck types because the code is the result of serializing, building a buffer, and then evaluating the buffer Value duck types do not have the side effect of having functions behave irregularly because of assigned object instances Each call to a value duck type Builder pattern results in a clean-slate approach, where the variables are assigned the state given to the Builder pattern..

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