Five Guidelines for Robust Reusable Code Code Optimization Five Guidelines for Robust Reusable Code 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 1

Code Optimization: Yvonne V. Richardson, BSCS, M. Ed Five Major Concepts Modularity Maintainability Re-usability Robustness 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 2

Code Optimization: Yvonne V. Richardson, BSCS, M. Ed Five Major Concepts Use the MVC Model Respect the Task-Method Correspondence Pass Few Parameters Declare Variables Locally Minimize Scope of Method Calls 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 3

Code Optimization Guideline 1 Use the MVC model to organize program code Model - default View - user interaction Controller - main 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 4

Code Optimization Guideline 2 One method, one task One task, one method 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 5

Code Optimization Guideline 3 Do not pass values to a method if it does not use them Affects both the calling and the called module 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 6

Code Optimization Guideline 4 Declare variables (and objects) as locally as possible Precondition – local construct – postcondition Top of the class or method is reasonable and traditional 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 7

Code Optimization Guideline 5 Call methods (and objects) as low as possible Stay within the MVC model Scope affects object life 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 8

Code Optimization: Yvonne V. Richardson, BSCS, M. Ed Summary Use the MVC Model Respect the Task-Method Correspondence Pass Few Parameters Declare Variables Locally Minimize Scope of Method Calls 2/14/2012 Code Optimization: Yvonne V. Richardson, BSCS, M. Ed 9