Performance code quality

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe OpenRewrite.Recipes.CSharp.CodeQuality.Performance.PerformanceCodeQuality

If the recipe isn’t available locally, install it with:

mod config recipes nuget install OpenRewrite.Recipes.CSharp.CodeQuality

Definition

This recipe runs the following recipes in order.

• Avoid boxing of value typeOpenRewrite.Recipes.CSharp.CodeQuality.Performance.AvoidBoxingOfValueType
• Use StringComparisonOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseStringComparison
• Avoid locking on publicly accessible instanceOpenRewrite.Recipes.CSharp.CodeQuality.Performance.AvoidLockingOnPubliclyAccessible
• Use StringBuilder.AppendLineOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseStringBuilderAppendLine
• Use Array.Empty<T>() instead of new T[0]OpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseArrayEmpty
• Return completed task instead of nullOpenRewrite.Recipes.CSharp.CodeQuality.Performance.ReturnCompletedTask
• Use Count/Length property instead of Count()OpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseCountProperty
• Use Regex.IsMatchOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseRegexIsMatch
• Use string.Concat instead of string.JoinOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseStringConcatInsteadOfJoin
• Bitwise operation on enum without Flags attributeOpenRewrite.Recipes.CSharp.CodeQuality.Performance.BitOperationOnEnumWithoutFlags
• Make parameter ref read-onlyOpenRewrite.Recipes.CSharp.CodeQuality.Performance.MakeParameterRefReadOnly
• Avoid NullReferenceExceptionOpenRewrite.Recipes.CSharp.CodeQuality.Performance.AvoidNullReferenceException
• Remove unnecessary explicit enumeratorOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UnnecessaryExplicitEnumerator
• Throwing of new NotImplementedExceptionOpenRewrite.Recipes.CSharp.CodeQuality.Performance.ThrowingNotImplementedException
• Optimize method callOpenRewrite.Recipes.CSharp.CodeQuality.Performance.OptimizeMethodCall
• Do not pass non-read-only struct by read-only referenceOpenRewrite.Recipes.CSharp.CodeQuality.Performance.DoNotPassNonReadOnlyStructByReadOnlyRef
• Replace Enum.ToString() with nameofOpenRewrite.Recipes.CSharp.CodeQuality.Performance.ReplaceEnumToStringWithNameof
• Optimize StringBuilder.Append usageOpenRewrite.Recipes.CSharp.CodeQuality.Performance.OptimizeStringBuilderAppend
• Find blocking calls in async methodsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindBlockingCallsInAsync
• Find methods not forwarding CancellationTokenOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindMissingCancellationToken
• Find implicit culture-sensitive string methodsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindImplicitCultureSensitiveMethods
• Find implicit culture-sensitive ToString callsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindImplicitCultureSensitiveToString
• Find LINQ methods replaceable with direct methodsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindLinqOnDirectMethods
• Find missing WithCancellation on async enumerablesOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindMissingWithCancellation
• Do not use async voidOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindAsyncVoid
• Do not use NaN in comparisonsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindNaNComparison
• Add timeout to RegexOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindMissingTimeoutForRegex
• Do not use blocking calls on tasksOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindDoNotUseBlockingCall
• Use ContainsKey instead of TryGetValue with discardOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseContainsKeyInsteadOfTryGetValue
• String.Format format string should be constantOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindStringFormatShouldBeConstant
• Avoid closure when using ConcurrentDictionaryOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindAvoidClosureInConcurrentDictionary
• Use RegexOptions.ExplicitCaptureOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseExplicitCaptureRegexOption
• Do not use ToString on GetType resultOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindDoNotUseToStringIfObject
• Find EqualityComparer<string>.Default usageOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindEqualityComparerDefaultOfString
• Find string.GetHashCode() without StringComparerOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindStringGetHashCode
• Use char overload for single-character string methodsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindOptimizeStartsWith
• Find Regex that could use source generatorOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseRegexSourceGenerator
• Find FormattableString that could use string.CreateOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindStringCreateInsteadOfFormattable
• Find GetCustomAttributes that could use Attribute.IsDefinedOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseAttributeIsDefined
• Find Span<char> equality that should use SequenceEqualOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindSequenceEqualForSpan
• Find structs without StructLayout attributeOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindMissingStructLayout
• Find methods that could be staticOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindMakeMethodStatic
• Find Guid.Parse with constant stringOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindOptimizeGuidCreation
• Find calls that could use TimeProviderOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseTimeProviderOverload
• Find simplifiable string.Create callsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindSimplifyStringCreate
• Find closure in GetOrAdd that could use factory argumentOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindAvoidClosureByUsingFactoryArg
• Find GetType() called on System.TypeOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindGetTypeOnSystemType
• Find LINQ Count() on materialized collectionOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindOptimizeEnumerableCountVsAny
• Find unused Stream.Read return valueOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindStreamReadResultNotUsed
• Find Dictionary/HashSet with struct key typeOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindStructWithDefaultEqualsAsKey
• Find LINQ methods replaceable with indexerOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseIndexerInsteadOfLinq
• Use ContainsKey instead of Keys.ContainsOpenRewrite.Recipes.CSharp.CodeQuality.Performance.UseContainsKey
• Find Values.Contains() instead of ContainsValue()OpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindUseValuesContainsInsteadOfValues
• Find closure in GetOrAdd/AddOrUpdate factoryOpenRewrite.Recipes.CSharp.CodeQuality.Performance.FindAvoidClosureInMethod