Gendarme.Rules.Maintainability.ConsiderUsingStopwatchRule(git)

ConsiderUsingStopwatchRule

Assembly: Gendarme.Rules.Maintainability
Version: git

Description

This rule checks methods for cases where a System.Diagnostics.Stopwatch could be used instead of using System.DateTime to compute the time required for an action. Stopwatch is preferred because it better expresses the intent of the code and because (on some platforms at least) StopWatch is accurate to roughly the microsecond whereas DateTime.Now is only accurate to 16 milliseconds or so. This rule only applies to assemblies compiled with the .NET framework version 2.0 (or later).

Examples

Bad example:

public TimeSpan DoLongOperation ()
{
    DateTime start = DateTime.Now;
    DownloadNewOpenSuseDvdIso ();
    return DateTime.Now - start;
}

Good example:

public TimeSpan DoLongOperation ()
{
    Stopwatch watch = Stopwatch.StartNew ();
    DownloadNewOpenSuseDvdIso ();
    return watch.Elapsed;
}

Notes

• This rule is available since Gendarme 2.0

Source code

You can browse the latest source code of this rule on github.com