By Adrian J. Issott
Universal layout styles for Symbian OS is the 1st layout styles booklet that addresses Symbian OS in particular. It introduces programmers to the typical layout styles that support enforce a wide number of functions and prone on Symbian OS. The target of the ebook is to supply the adventure of Symbian's builders to a much wider viewers and permit subtle courses to be speedy written and to a excessive usual. for you to do that, it:
- Provides styles in keeping with the Symbian OS architectural parts
- Describes how styles fitted to non-mobile software program could be tailored or maybe refrained from for Symbian OS
- Provides Symbian OS established examples and code illustrations
each one bankruptcy covers styles that handle particular key main issue skilled by way of builders: reminiscence functionality, time functionality, energy functionality, protection and responsiveness.
This booklet isn't particular to any specific model of Symbian OS. whereas person examples may possibly come from one model or one other the styles defined during this booklet are meant to be extra universal and in line with the typical performance on hand in all releases. the place attainable the examples given for the layout styles will at once mirror the software program in Symbian OS.
universal layout styles for Symbian OS is meant for use along with a number of SDKs for particular Symbian OS telephones and with the assets on hand on the Symbian DevNet site. This facility will give you the history fabric had to support comprehend the styles and the examples accompanying them.
Read or Download Common Design Patterns for Symbian OS: The Foundations of Smartphone Software (Symbian Press) PDF
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Extra info for Common Design Patterns for Symbian OS: The Foundations of Smartphone Software (Symbian Press)
FAIL FAST 23 By using this pattern to check the design contracts internal to a component we have effectively produced a form of unit-test code built into the component. However, these test steps are in a form that needs to be driven as part of the standard testing for the component. This pattern and testing are complementary since testing is used to show that the implementation of a component’s design is behaving correctly (shown by the asserts) whilst the asserts aid the debugging of any design violations (shown by the testing).
Improving the encapsulation of your objects helps with reliability because objects do what you expect them to do. It also helps with maintainability because you minimize the risk that extending or changing the software breaks other parts of the application or service. It also reduces testing cost by allowing you to more easily isolate an object for unit testing. However, this is at the expense of reduced ﬂexibility. 4 Pattern Elements that Are Already in Place The patterns in this book are speciﬁed in terms of Symbian OS and describe how to reuse any of the utility libraries or services provided as part of the operating system so that you can get your solution up and running as quickly as possible.
Problem Context A single sentence that describes the environment or situations in which the problem occurs. This section provides a clear outline of the background to the problem and the assumptions that this entails. Summary Bullet points summarize each of the main forces involved in the problem that the pattern has to address. ’ Description Here, longer paragraphs expand on the bullet points in the summary. ’ In most cases, a pattern DESIGN PATTERN TEMPLATE 11 will be fully implementable by all types of developers.