Download Common Design Patterns for Symbian OS: The Foundations of by Adrian J. Issott PDF

By Adrian J. Issott

Universal layout styles for Symbian OS is the 1st layout styles e-book that addresses Symbian OS particularly. It introduces programmers to the typical layout styles that support enforce a wide number of purposes and providers on Symbian OS. The objective of the e-book is to supply the adventure of Symbian's builders to a much wider viewers and let refined courses to be quick written and to a excessive commonplace. for you to do that, it:

  • Provides styles according to the Symbian OS architectural parts
  • Describes how styles suited to non-mobile software program will be tailored or perhaps shunned for Symbian OS
  • Provides Symbian OS dependent examples and code illustrations

each one bankruptcy covers styles that deal with particular key hindrance skilled via builders: reminiscence functionality, time functionality, energy functionality, defense and responsiveness.

This e-book isn't really particular to any specific model of Symbian OS. whereas person examples might come from one model or one other the styles defined during this booklet are meant to be extra typical and in keeping with the typical performance to be had in all releases. the place attainable the examples given for the layout styles will without delay replicate the software program in Symbian OS.

universal layout styles for Symbian OS is meant for use at the side of 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.

Show description

Read Online or Download Common Design Patterns for Symbian OS: The Foundations of Smartphone Software (Symbian Press) PDF

Best data in the enterprise books

Wireless Data Demystified

Instant subscribers are up, yet profit in line with subscriber is not and it is not going to be except instant carrier prone delivers greater than plain-vanilla voice prone. the line to winning deployment of knowledge prone has been tricky, however it is key if the goes to outlive. This ebook takes you contained in the info prone that might a method or one other rework the instant undefined.

High Data Rate Transmitter Circuits

De Ranter (RF MAGIC, US) and Steyaert (KU Leuven, Belgium) describe layout concepts for complementary steel oxide semiconductor communique circuits, particularly oscillators and upconverters. The layout instruments defined are in keeping with topology-specific layout templates that may be used as a framework for automating layout tactics.

Computer telephony integration

Because the book of the 1st variation, the CTI global has replaced considerably. the place it used to be fascinated with the mixing of voice structures with pcs, the focal point is now on IP-based voice, or converged networks and prone. at the present time, the telcos are upgrading their structures from circuit-switched to IP-based packet-switched networks.

Crystal Reports 9 Essentials (Professional Projects)

Written through running shoes and experts, Crystal studies nine necessities publications you step-by-step throughout the technique of developing your personal stories with this most modern model. commence with the fundamentals of conceptualizing your record. Then stream directly to complex subject matters, together with growing customized capabilities, including charts, and publishing Crystal reviews to the internet.

Additional resources for Common Design Patterns for Symbian OS: The Foundations of Smartphone Software (Symbian Press)

Example text

Structure This pattern focuses on the concrete places within a software component where you can add lines of code, known as assertions or, more colloquially, as asserts, where a check is performed that the design constraints for your component are being met. It is when an assert fails that the current thread is panicked. We classify asserts into two different types: • External asserts check for the design constraints imposed on how software outside the component interacts with it. An example would be clients of an API provided by the component.

These are only a suggestion, not an immutable rule. You should adapt the implementation to meet your needs, by adding different, extra, or more detailed steps, or, sometimes, by re-ordering the steps. Symbian OS C++ code fragments are given to illustrate a possible implementation. Consequences This section lists the typical positive and negative outcomes resulting from the use of the pattern. Example Resolved The example described in the Problem section of this pattern is resolved in this section using the pattern.

Org/wiki/Assertion(computing) is an article on the general use of assertions when developing software. 12 It is enabled by default but can be changed using User::SetJustInTime() or RProcess::SetJustInTime(). 32 ERROR-HANDLING STRATEGIES Escalate Errors Intent Enhance your error handling by using the Symbian OS Leave mechanism to escalate the responsibility of handling an error up to the point which has enough context to resolve the error. AKA Leave and Trap, Error Propagation, Exception Handling, and Separating Error-Handling Code from ‘Regular’ Code Problem Context Your component is part of or contains a layered software stack13 and has to appropriately handle non-fatal domain or system errors.

Download PDF sample

Rated 4.74 of 5 – based on 30 votes