System.Collections.Immutable 6.0.0 The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved

.NET 6.0 .NET Standard 2.0 .NET Framework 4.6.1
There is a newer prerelease version of this package available.
See the version list below for details.
Install-Package System.Collections.Immutable -Version 6.0.0
dotnet add package System.Collections.Immutable --version 6.0.0
<PackageReference Include="System.Collections.Immutable" Version="6.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add System.Collections.Immutable --version 6.0.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: System.Collections.Immutable, 6.0.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install System.Collections.Immutable as a Cake Addin
#addin nuget:?package=System.Collections.Immutable&version=6.0.0

// Install System.Collections.Immutable as a Cake Tool
#tool nuget:?package=System.Collections.Immutable&version=6.0.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

This package provides collections that are thread safe and guaranteed to never change their contents, also known as immutable collections. Like strings, any methods that perform modifications will not change the existing instance but instead return a new instance. For efficiency reasons, the implementation uses a sharing mechanism to ensure that newly created instances share as much data as possible with the previous instance while ensuring that operations have a predictable time complexity.

Commonly Used Types:

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard2.0 netstandard2.1
.NET Framework net461 net462 net463 net47 net471 net472 net48
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1.5K)

Showing the top 5 NuGet packages that depend on System.Collections.Immutable:

Package Downloads
System.Reflection.Metadata The ID prefix of this package has been reserved for one of the owners of this package by

This package provides a low-level .NET (ECMA-335) metadata reader and writer. It's geared for performance and is the ideal choice for building higher-level libraries that intend to provide their own object model, such as compilers. Commonly Used Types: System.Reflection.Metadata.MetadataReader System.Reflection.PortableExecutable.PEReader System.Reflection.Metadata.Ecma335.MetadataBuilder System.Reflection.PortableExecutable.PEBuilder System.Reflection.PortableExecutable.ManagedPEBuilder

Microsoft.CodeAnalysis.Common The ID prefix of this package has been reserved for one of the owners of this package by

A shared package used by the Microsoft .NET Compiler Platform ("Roslyn"). Do not install this package manually, it will be added as a prerequisite by other packages that require it. More details at This package was built from the source at

Microsoft.VisualStudio.Web.CodeGeneration.Contracts The ID prefix of this package has been reserved for one of the owners of this package by

Contains interfaces for Project Model and messaging for scaffolding.

Npgsql The ID prefix of this package has been reserved for one of the owners of this package by

Npgsql is the open source .NET data provider for PostgreSQL.

Microsoft.VisualStudio.Web.CodeGeneration The ID prefix of this package has been reserved for one of the owners of this package by

Contains the CodeGenCommand that finds the appropriate code generator and invokes it from project dependencies.

GitHub repositories (276)

Showing the top 5 popular GitHub repositories that depend on System.Collections.Immutable:

Repository Stars
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
ASP.NET Boilerplate - Web Application Framework
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
Version Downloads Last updated
7.0.0-preview.6.22324.4 902 7/12/2022
7.0.0-preview.5.22301.12 850 6/14/2022
7.0.0-preview.4.22229.4 6,862 5/10/2022
7.0.0-preview.3.22175.4 35,897 4/13/2022
7.0.0-preview.2.22152.2 39,859 3/14/2022
7.0.0-preview.1.22076.8 33,641 2/17/2022
6.0.2-mauipre.1.22102.15 722 2/15/2022
6.0.2-mauipre.1.22054.8 1,962 1/19/2022
6.0.0 31,101,793 11/8/2021
6.0.0-rc.2.21480.5 238,560 10/12/2021
6.0.0-rc.1.21451.13 111,252 9/14/2021
6.0.0-preview.7.21377.19 76,785 8/10/2021
6.0.0-preview.6.21352.12 33,058 7/14/2021
6.0.0-preview.5.21301.5 106,672 6/15/2021
6.0.0-preview.4.21253.7 66,788 5/24/2021
6.0.0-preview.3.21201.4 69,927 4/8/2021
6.0.0-preview.2.21154.6 52,197 3/11/2021
6.0.0-preview.1.21102.12 73,636 2/12/2021
5.0.0 96,487,832 11/9/2020
5.0.0-rc.2.20475.5 302,517 10/13/2020
5.0.0-rc.1.20451.14 293,821 9/14/2020
5.0.0-preview.8.20407.11 409,338 8/25/2020
5.0.0-preview.7.20364.11 88,083 7/21/2020
5.0.0-preview.6.20305.6 3,058 6/25/2020
5.0.0-preview.5.20278.1 4,290 6/10/2020
5.0.0-preview.4.20251.6 4,878 5/18/2020
5.0.0-preview.3.20214.6 127,363 4/23/2020
5.0.0-preview.2.20160.6 75,836 4/2/2020
5.0.0-preview.1.20120.5 7,209 3/16/2020
1.7.1 90,686,485 5/12/2020
1.7.0 89,683,468 12/3/2019
1.7.0-preview3.19551.4 134,194 11/13/2019
1.7.0-preview2.19523.17 30,842 11/1/2019
1.7.0-preview1.19504.10 541,923 10/15/2019
1.6.0 23,647,245 9/23/2019
1.6.0-rc1.19456.4 44,471 9/16/2019
1.6.0-preview9.19421.4 1,115,929 9/4/2019
1.6.0-preview9.19416.11 823 9/4/2019
1.6.0-preview8.19405.3 192,959 8/13/2019
1.6.0-preview7.19362.9 82,838 7/23/2019
1.6.0-preview6.19303.8 143,100 6/12/2019
1.6.0-preview6.19264.9 1,086 9/4/2019
1.6.0-preview5.19224.8 323,701 5/6/2019
1.6.0-preview4.19212.13 27,089 4/18/2019
1.6.0-preview3.19128.7 182,188 3/6/2019
1.6.0-preview.19073.11 35,185 1/29/2019
1.6.0-preview.18571.3 55,000 12/3/2018
1.5.0 143,884,619 5/29/2018
1.5.0-rc1 267,289 5/6/2018
1.5.0-preview2-26406-04 188,810 4/10/2018
1.5.0-preview1-26216-02 424,994 2/26/2018
1.4.0 69,825,531 8/11/2017
1.4.0-preview2-25405-01 10,555 6/27/2017
1.4.0-preview1-25305-02 13,383 5/9/2017
1.3.1 86,142,550 1/3/2017
1.3.0 106,432,604 11/15/2016
1.3.0-preview1-24530-04 90,724 10/24/2016
1.2.0 198,618,384 6/27/2016
1.2.0-rc2-24027 8,190,040 5/16/2016
1.1.38-beta-23516 34,118 11/18/2015
1.1.38-beta-23409 4,044 10/15/2015
1.1.38-beta-23225 91,732 9/1/2015
1.1.37 5,168,502 7/29/2015
1.1.37-beta-23109 19,287 7/27/2015
1.1.37-beta-23019 3,711 6/30/2015
1.1.36 4,689,762 5/11/2015
1.1.34-rc 27,918 3/6/2015
1.1.33-beta 370,205 12/10/2014
1.1.32-beta 168,128 10/10/2014