CompareWithEmptyStringEfficientlyRule Class

This rule will fire if a string is compared to "" or String.Empty. Instead use a String.Length test which should be a bit faster. Another possibility (with .NET 2.0) is to use the static String.IsNullOrEmpty method. String.IsNullOrEmpty.

Syntax

[Gendarme.Framework.EngineDependency(typeof(Gendarme.Framework.Engines.OpCodeEngine, Gendarme.Framework, Version=2.8.0.0, Culture=neutral, PublicKeyToken=null))]
[Gendarme.Framework.FxCopCompatibility("Microsoft.Performance", "CA1820:TestForEmptyStringsUsingStringLength")]
[Gendarme.Framework.Problem("This method compares a string with an empty string by using the Equals method or the equality (==) or inequality (!=) operators.")]
[Gendarme.Framework.Solution("Compare String.Length with 0 instead. The string length is known and it's faster to compare integers than to compare strings.")]
public class CompareWithEmptyStringEfficientlyRule : Gendarme.Framework.Rule, Gendarme.Framework.IMethodRule

Remarks

Documentation for this section has not yet been entered.

Example

Bad example:

Example

            public void SimpleMethod (string myString)
            {
            	if (myString.Equals (String.Empty)) {
            	}
            }

Example

Good example:

Example

            public void SimpleMethod (string myString)
            {
            	if (myString.Length == 0) {
            	}
            }

Requirements

Namespace: Gendarme.Rules.Performance
Assembly: Gendarme.Rules.Performance (in Gendarme.Rules.Performance.dll)
Assembly Versions: 2.8.0.0