ZeroAlloc.Analyzers 1.3.0

There is a newer version of this package available.
See the version list below for details. 
dotnet add package ZeroAlloc.Analyzers --version 1.3.0
                    


                    

                
NuGet\Install-Package ZeroAlloc.Analyzers -Version 1.3.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="ZeroAlloc.Analyzers" Version="1.3.0">
  <PrivateAssets>all</PrivateAssets>
  <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="ZeroAlloc.Analyzers" Version="1.3.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="ZeroAlloc.Analyzers">
  <PrivateAssets>all</PrivateAssets>
  <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add ZeroAlloc.Analyzers --version 1.3.0
                    


                    

                
#r "nuget: ZeroAlloc.Analyzers, 1.3.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package ZeroAlloc.Analyzers@1.3.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=ZeroAlloc.Analyzers&version=1.3.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=ZeroAlloc.Analyzers&version=1.3.0
                    


                            Install as a Cake Tool

ZeroAlloc Analyzers

Roslyn analyzers for modern .NET performance patterns with multi-TFM awareness. Detects allocation-heavy patterns that existing analyzers miss and suggests zero/low-allocation alternatives.

Installation

<PackageReference Include="ZeroAlloc.Analyzers" Version="1.0.0" PrivateAssets="all" />

Rules

ID Description Severity Min TFM
ZA01xx — Collections
ZA0101 Use FrozenDictionary for read-only dictionary Info net8.0
ZA0102 Use FrozenSet for read-only set Info net8.0
ZA0103 Use CollectionsMarshal.AsSpan for List iteration Info net5.0
ZA0104 Use SearchValues/FrozenSet for repeated lookups Info net8.0
ZA0105 Use TryGetValue instead of ContainsKey + indexer Warning Any
ZA0106 Avoid premature ToList/ToArray before LINQ Warning Any
ZA0107 Pre-size collections when capacity is known Info Any
ZA0108 Avoid redundant ToList/ToArray materialization Warning Any
ZA0109 Avoid zero-length array allocation, use Array.Empty<T>() Warning Any
ZA02xx — Strings
ZA0201 Avoid string concatenation in loops Warning Any
ZA0202 Avoid chained string.Replace calls Info Any
ZA0203 Use AsSpan instead of Substring Info net5.0
ZA0204 Use string.Create instead of string.Format Info net6.0
ZA0205 Use CompositeFormat for repeated format strings Info net8.0
ZA0206 Avoid span.ToString() before Parse Info net6.0
ZA0208 Avoid string.Join overload that boxes non-string elements Warning Any
ZA0209 Avoid value type boxing in string concatenation Warning Any
ZA03xx — Memory
ZA0301 Use stackalloc for small fixed-size arrays Info Any
ZA0302 Use ArrayPool for large temporary arrays Info Any
ZA04xx — Logging
ZA0401 Use LoggerMessage source generator Info net6.0
ZA05xx — Boxing
ZA0501 Avoid boxing value types in loops Warning Any
ZA0502 Avoid closure allocations in loops Info Any
ZA0504 Avoid defensive copies on in/readonly structs Info Any
ZA06xx — LINQ & Params
ZA0601 Avoid LINQ methods in loops Warning Any
ZA0602 Avoid params calls in loops Info Any
ZA0603 Use .Count/.Length instead of LINQ .Count() Info Any
ZA0604 Use .Count > 0 instead of LINQ .Any() Info Any
ZA0605 Use indexer instead of LINQ .First()/.Last() Info Any
ZA0606 Avoid foreach over interface-typed collection variable Warning Any
ZA0607 Avoid multiple enumeration of IEnumerable<T> Warning Any
ZA07xx — Regex
ZA0701 Use GeneratedRegex for compile-time regex Info net7.0
ZA08xx — Enums
ZA0801 Avoid Enum.HasFlag (boxing on < net7.0) Info < net7.0
ZA0802 Avoid Enum.ToString() allocations Info Any
ZA0803 Cache Enum.GetName/GetValues in loops Info Any
ZA09xx — Sealing
ZA0901 Consider sealing classes for devirtualization Info Any
ZA10xx — Serialization
ZA1001 Use JSON source generation instead of reflection Info net7.0
ZA11xx — Async
ZA1101 Elide async/await on simple tail calls Info Any
ZA1102 Dispose CancellationTokenSource Info Any
ZA1104 Avoid Span<T> in async methods, use Memory<T> instead Warning Any
ZA14xx — Delegates
ZA1401 Use static lambda when no capture needed Info net5.0
ZA15xx — Value Types
ZA1501 Override GetHashCode on struct dictionary keys Info Any
ZA1502 Avoid finalizers, use IDisposable Info Any

TFM Compatibility

Rules are automatically enabled/disabled based on your project's TargetFramework. The package includes a .props file that flows TargetFramework to the analyzers via CompilerVisibleProperty.

TFM Active Rules
net8.0+ All 42 rules
net7.0 All except ZA0101, ZA0102, ZA0104, ZA0205, ZA0801
net6.0 All except ZA0101, ZA0102, ZA0104, ZA0205, ZA0701, ZA0801, ZA1001
net5.0 ZA0103, ZA0105-ZA0109, ZA0201-ZA0203, ZA0208, ZA0209, ZA0301, ZA0302, ZA0501, ZA0502, ZA0504, ZA0601-ZA0607, ZA0801-ZA0803, ZA0901, ZA1101, ZA1102, ZA1104, ZA1401, ZA1501, ZA1502
< net5.0 ZA0105-ZA0109, ZA0201, ZA0202, ZA0208, ZA0209, ZA0301, ZA0302, ZA0501, ZA0502, ZA0504, ZA0601-ZA0607, ZA0802, ZA0803, ZA0901, ZA1101, ZA1102, ZA1104, ZA1501, ZA1502

License

MIT

There are no supported framework assets in this package.

Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.3.12 0 3/22/2026
1.3.11 41 3/20/2026
1.3.10 28 3/20/2026
1.3.9 34 3/20/2026
1.3.8 35 3/19/2026
1.3.7 37 3/19/2026
1.3.6 112 3/17/2026
1.3.5 79 3/16/2026
1.3.4 76 3/16/2026
1.3.3 82 3/16/2026
1.3.2 81 3/15/2026
1.3.1 284 3/13/2026
1.3.0 79 3/13/2026
1.2.0 81 3/13/2026
1.1.0 81 3/10/2026
1.0.3 122 3/9/2026
1.0.2 248 3/8/2026
1.0.1 82 3/8/2026