Creating maintainable code with Code Metrics

Introduction to VSTS

Introduction to Visual Studio 2008 Development Edition

Understanding code complexity using Code Metrics

Understanding code complexity using Code Metrics

Visual Studio Team System

Features in Developer Edition

Development Edition Features

Unit testing with code coverageStatic Code AnalysisCode ProfilingCode Metrics

Integrated Unit Testing

Integrated Static Code analysisSecurity ErrorsLocalization problemsMemory issues…

Integrated ProfilerPerformance problemsMemory problems

Potential Sql Injection attack

Object not Disposed

Localization Issue

Improving Code Quality

Who allocates the most Objects

Who allocates the most memory

Who is called the most?

Who runs for the longest

What do you have the most of?

What is taking up the most memory

Improving Quality: Profiler

Performance Report Summary

Gives a snapshot of software healthUnderstand your code complexityQuickly compare code to find potential trouble spots

Reduce risk & improve maintainabilityUnderstand complexity of inherited code

Code metrics

Metric: Class Coupling# of Dependencies Between Types

Metric: Class InheritanceRipple effect?

Metric: Lines of Code# of Executing Lines of Code

123

4

5

static class Program{

#region Application Entry Point/// <summary>/// The main entry point for the application./// </summary>[STAThread]static void Main(string[] args){

Application.EnableVisualStyles();Application.SetCompatibleTextRenderingDefault(false);Workflow(args);

}#endregion

#region Static Methods/// <summary> Primary workflow for the application. </summary>/// <param name="args"> Command line arguments. </param>private static void Workflow(string[] cmdargs){

// Collect the list of command line argumentsList<string> args = new List<string>(cmdargs);

// Show usage syntax if the user so asksif (UseArg(args, "/?")) { ShowAbout(); return; }

12

3

45

6,7

89

10

11

bool ParseCommandLine(string[] args){

if (args.Length == 0) ShowHelp(); return;for (int i = 0; i < args.Length; i++)

switch (args[i]){

case "/?" :ShowHelp();return false;

case "/input" :if (args.Length > i && File.Exists(args[i + 1]))

InputFile = args[i++];break;

case "/c" :Colapse = true;break;

}return true;

}

Metric: Cyclomatic Complexity# of branches of Code

Overall indication of complexity by aggregation of several factors

Lines of CodeCyclomatic ComplexityComputational Complexity Used on the Windows Code Base

Metric: Maintainability Index

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