Dr. Dobb's Journal - November 2007 - (Page 43) Listing Two function DisplayMenu ( ) { if ( ) { LoadLib_XHR (" "); } else { LoadLib_XHR (" "); } LoadStylesheet (" "); LoadLib_STH (" "); // Code for displaying a menu } function LoadLib_XHR (LibName) { } function LoadLib_STH (LibName) { } function LoadStylesheet (LibName) { } Noncohesion Obviously, the mechanics of these techniques should be implemented within discrete functions, thus reducing the act of loading a resource to a simple call. However, the optimum designs for complex and powerful applications demand a degree of granularity to match—large programs are often split into many small modules, and in this case loading on demand can cause code to become littered with extraneous calls. Listing Two demonstrates this, where LoadLib_STH loads a library using the script-tag approach and LoadLib_XHR uses the XHR-based technique (LoadStylesheet is self-explanatory). In this example, using on-demand techniques necessitates populating DisplayMenu November 2007 l www.ddj.com l Dr. Dobb’s Journal 43 http://en.wikipedia.org/wiki/Cohesion_%28computer_science%29 http://en.wikipedia.org/wiki/Cohesion_%28computer_science%29 http://en.wikipedia.org/wiki/Cohesion_%28computer_science%29 http://www.servoy.com/sexy http://www.servoy.com/sexy http://www.ddj.com
Table of Contents Feed for the Digital Edition of Dr. Dobb's Journal - November 2007 Contents Hmmmm Alia Vox Developer Diaries Developer’s Notebook Smart Compilers - But Smart Enough? Conversations Grid-Enabling Resource-Intensive Applications Distributed Computing: Windows and Linux Adobe AIR: Desktop/Web Convergence Transparency on Demand Reusable Associations Effective Concurrency The Agile Edge Swaine’s Flames Dr. Dobb's Journal - November 2007 Dr. Dobb's Journal - November 2007 - (Page Cover1) Dr. Dobb's Journal - November 2007 - (Page Cover2) Dr. Dobb's Journal - November 2007 - (Page 1) Dr. Dobb's Journal - November 2007 - (Page 2) Dr. Dobb's Journal - November 2007 - (Page 3) Dr. Dobb's Journal - November 2007 - Contents (Page 4) Dr. Dobb's Journal - November 2007 - Contents (Page 5) Dr. Dobb's Journal - November 2007 - Hmmmm (Page 6) Dr. Dobb's Journal - November 2007 - Hmmmm (Page 7) Dr. Dobb's Journal - November 2007 - Hmmmm (Page 8) Dr. Dobb's Journal - November 2007 - Hmmmm (Page 9) Dr. Dobb's Journal - November 2007 - Alia Vox (Page 10) Dr. Dobb's Journal - November 2007 - Alia Vox (Page 11) Dr. Dobb's Journal - November 2007 - Developer Diaries (Page 12) Dr. Dobb's Journal - November 2007 - Developer Diaries (Page 13) Dr. Dobb's Journal - November 2007 - Developer’s Notebook (Page 14) Dr. Dobb's Journal - November 2007 - Developer’s Notebook (Page 15) Dr. Dobb's Journal - November 2007 - Smart Compilers - But Smart Enough? (Page 16) Dr. Dobb's Journal - November 2007 - Smart Compilers - But Smart Enough? (Page 17) Dr. Dobb's Journal - November 2007 - Smart Compilers - But Smart Enough? (Page 18) Dr. Dobb's Journal - November 2007 - Smart Compilers - But Smart Enough? (Page 19) Dr. Dobb's Journal - November 2007 - Conversations (Page 20) Dr. Dobb's Journal - November 2007 - Conversations (Page 21) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 22) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 23) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 24) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 25) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 26) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 27) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 28) Dr. Dobb's Journal - November 2007 - Grid-Enabling Resource-Intensive Applications (Page 29) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 30) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 31) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 32) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 33) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 34) Dr. Dobb's Journal - November 2007 - Distributed Computing: Windows and Linux (Page 35) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 36) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 37) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 38) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 39) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 40) Dr. Dobb's Journal - November 2007 - Adobe AIR: Desktop/Web Convergence (Page 41) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 42) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 43) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 44) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 45) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 46) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 47) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 48) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 49) Dr. Dobb's Journal - November 2007 - Transparency on Demand (Page 50) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 51) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 52) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 53) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 54) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 55) Dr. Dobb's Journal - November 2007 - Reusable Associations (Page 56) Dr. Dobb's Journal - November 2007 - Effective Concurrency (Page 57) Dr. Dobb's Journal - November 2007 - Effective Concurrency (Page 58) Dr. Dobb's Journal - November 2007 - Effective Concurrency (Page 59) Dr. Dobb's Journal - November 2007 - The Agile Edge (Page 60) Dr. Dobb's Journal - November 2007 - The Agile Edge (Page 61) Dr. Dobb's Journal - November 2007 - The Agile Edge (Page 62) Dr. Dobb's Journal - November 2007 - The Agile Edge (Page 63) Dr. Dobb's Journal - November 2007 - Swaine’s Flames (Page 64) Dr. Dobb's Journal - November 2007 - Swaine’s Flames (Page Cover3) Dr. Dobb's Journal - November 2007 - Swaine’s Flames (Page Cover4)
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