System.Collections.Immutable 9.0.0

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.2 This package targets .NET Framework 4.6.2. The package is compatible with this framework or higher. 
dotnet add package System.Collections.Immutable --version 9.0.0                

                    
                

            
NuGet\Install-Package System.Collections.Immutable -Version 9.0.0
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="System.Collections.Immutable" Version="9.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add System.Collections.Immutable --version 9.0.0                

                    
                

            
#r "nuget: System.Collections.Immutable, 9.0.0"
#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. 
// Install System.Collections.Immutable as a Cake Addin
#addin nuget:?package=System.Collections.Immutable&version=9.0.0

// Install System.Collections.Immutable as a Cake Tool
#tool nuget:?package=System.Collections.Immutable&version=9.0.0

About

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.

The System.Collections.Immutable library is built-in as part of the shared framework in .NET Runtime. The package can be installed when you need to use it in other target frameworks.

How to Use

using System.Collections.Immutable;

// Create immutable set of strings
ImmutableHashSet<string> colors = ImmutableHashSet.Create("Red", "Green", "Blue");

// Create a new set by adding and removing items from the original set
ImmutableHashSet<string> colorsModified = colors.Remove("Red").Add("Orange");

foreach (string s in colorsModified)
{
    Console.WriteLine(s);
}

/* Example output:
 Blue
 Green
 Orange
 */

Main Types

The main types provided by this library are:

  • System.Collections.Immutable.ImmutableArray
  • System.Collections.Immutable.ImmutableArray<T>
  • System.Collections.Immutable.ImmutableDictionary
  • System.Collections.Immutable.ImmutableDictionary<TKey,TValue>
  • System.Collections.Immutable.ImmutableHashSet
  • System.Collections.Immutable.ImmutableHashSet<T>
  • System.Collections.Immutable.ImmutableList
  • System.Collections.Immutable.ImmutableList<T>
  • System.Collections.Immutable.ImmutableQueue
  • System.Collections.Immutable.ImmutableQueue<T>
  • System.Collections.Immutable.ImmutableSortedDictionary
  • System.Collections.Immutable.ImmutableSortedDictionary<TKey,TValue>
  • System.Collections.Immutable.ImmutableSortedSet
  • System.Collections.Immutable.ImmutableSortedSet<T>
  • System.Collections.Immutable.ImmutableStack
  • System.Collections.Immutable.ImmutableStack<T>
  • System.Collections.Frozen.FrozenDictionary
  • System.Collections.Frozen.FrozenDictionary<TKey, TValue>
  • System.Collections.Frozen.FrozenSet
  • System.Collections.Frozen.FrozenSet<T>

Additional Documentation

Feedback & Contributing

System.Collections.Immutable is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (2.1K)

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

Package Downloads
System.Reflection.Metadata

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. The metadata format is defined by the ECMA-335 - Common Language Infrastructure (CLI) specification. The System.Reflection.Metadata library is built-in as part of the shared framework in .NET Runtime. The package can be installed when you need to use it in other target frameworks.
Microsoft.CodeAnalysis.Common

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 https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/bde21ee2b98b775b010d01a93f81ef587fe80962.
Microsoft.CodeAnalysis.CSharp

.NET Compiler Platform ("Roslyn") support for C#, Microsoft.CodeAnalysis.CSharp.dll. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/bde21ee2b98b775b010d01a93f81ef587fe80962.
Humanizer.Core

Humanizer core package that contains the library and the neutral language (English) resources
Microsoft.CodeAnalysis.Workspaces.Common

A shared package used by the .NET Compiler Platform ("Roslyn") including support for analyzing projects and solutions. Do not install this package manually, it will be added as a prerequisite by other packages that require it. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/bde21ee2b98b775b010d01a93f81ef587fe80962.

GitHub repositories (497)

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

Repository Stars
icsharpcode/ILSpy
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
dotnet/roslyn
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
dotnet/runtime
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
OpenRA/OpenRA
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
abpframework/abp
Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.
Version Downloads Last updated
9.0.0 46,736 11/12/2024
9.0.0-rc.2.24473.5 13,599 10/8/2024
9.0.0-rc.1.24431.7 13,355 9/10/2024
9.0.0-preview.7.24405.7 4,371 8/13/2024
9.0.0-preview.6.24327.7 5,244 7/9/2024
9.0.0-preview.5.24306.7 3,374 6/11/2024
9.0.0-preview.4.24266.19 2,026 5/21/2024
9.0.0-preview.3.24172.9 3,413 4/11/2024
9.0.0-preview.2.24128.5 6,365 3/12/2024
9.0.0-preview.1.24080.9 10,921 2/13/2024
8.0.0 38,844,909 11/14/2023
8.0.0-rc.2.23479.6 623,697 10/10/2023
8.0.0-rc.1.23419.4 22,117 9/12/2023
8.0.0-preview.7.23375.6 11,851 8/8/2023
8.0.0-preview.6.23329.7 8,275 7/11/2023
8.0.0-preview.5.23280.8 9,995 6/13/2023
8.0.0-preview.4.23259.5 3,547 5/16/2023
8.0.0-preview.3.23174.8 5,303 4/11/2023
8.0.0-preview.2.23128.3 10,040 3/14/2023
8.0.0-preview.1.23110.8 3,517 2/21/2023
7.0.0 73,185,960 11/7/2022
7.0.0-rc.2.22472.3 56,393 10/11/2022
7.0.0-rc.1.22426.10 15,759 9/14/2022
7.0.0-preview.7.22375.6 7,364 8/9/2022
7.0.0-preview.6.22324.4 7,455 7/12/2022
7.0.0-preview.5.22301.12 2,042 6/14/2022
7.0.0-preview.4.22229.4 15,398 5/10/2022
7.0.0-preview.3.22175.4 117,575 4/13/2022
7.0.0-preview.2.22152.2 85,265 3/14/2022
7.0.0-preview.1.22076.8 69,570 2/17/2022
6.0.1 17,264 11/12/2024
6.0.0 339,407,080 11/8/2021
6.0.0-rc.2.21480.5 318,783 10/12/2021
6.0.0-rc.1.21451.13 233,322 9/14/2021
6.0.0-preview.7.21377.19 123,092 8/10/2021
6.0.0-preview.6.21352.12 41,398 7/14/2021
6.0.0-preview.5.21301.5 200,642 6/15/2021
6.0.0-preview.4.21253.7 77,347 5/24/2021
6.0.0-preview.3.21201.4 98,571 4/8/2021
6.0.0-preview.2.21154.6 95,794 3/11/2021
6.0.0-preview.1.21102.12 99,555 2/12/2021
5.0.0 328,377,561 11/9/2020 5.0.0 is deprecated because it is no longer maintained.
5.0.0-rc.2.20475.5 386,703 10/13/2020
5.0.0-rc.1.20451.14 325,309 9/14/2020
5.0.0-preview.8.20407.11 485,551 8/25/2020
5.0.0-preview.7.20364.11 116,609 7/21/2020
5.0.0-preview.6.20305.6 3,943 6/25/2020
5.0.0-preview.5.20278.1 5,878 6/10/2020
5.0.0-preview.4.20251.6 5,841 5/18/2020
5.0.0-preview.3.20214.6 146,559 4/23/2020
5.0.0-preview.2.20160.6 89,105 4/2/2020
5.0.0-preview.1.20120.5 13,552 3/16/2020
1.7.1 227,962,724 5/12/2020
1.7.0 202,159,386 12/3/2019
1.7.0-preview3.19551.4 191,247 11/13/2019
1.7.0-preview2.19523.17 33,718 11/1/2019
1.7.0-preview1.19504.10 752,692 10/15/2019
1.6.0 36,398,813 9/23/2019
1.6.0-rc1.19456.4 49,629 9/16/2019
1.6.0-preview9.19421.4 1,431,472 9/4/2019
1.6.0-preview9.19416.11 1,568 9/4/2019
1.6.0-preview8.19405.3 401,793 8/13/2019
1.6.0-preview7.19362.9 95,287 7/23/2019
1.6.0-preview6.19303.8 178,019 6/12/2019
1.6.0-preview6.19264.9 1,897 9/4/2019
1.6.0-preview5.19224.8 670,648 5/6/2019
1.6.0-preview4.19212.13 32,034 4/18/2019
1.6.0-preview3.19128.7 216,523 3/6/2019
1.6.0-preview.19073.11 40,246 1/29/2019
1.6.0-preview.18571.3 70,602 12/3/2018
1.5.0 302,194,404 5/29/2018
1.5.0-rc1 372,394 5/6/2018
1.5.0-preview2-26406-04 292,992 4/10/2018
1.5.0-preview1-26216-02 569,642 2/26/2018
1.4.0 147,250,504 8/11/2017
1.4.0-preview2-25405-01 14,227 6/27/2017
1.4.0-preview1-25305-02 18,117 5/9/2017
1.3.1 194,475,408 1/3/2017
1.3.0 243,441,827 11/15/2016
1.3.0-preview1-24530-04 137,899 10/24/2016
1.2.0 321,238,609 6/27/2016
1.2.0-rc2-24027 11,131,992 5/16/2016
1.1.38-beta-23516 37,104 11/18/2015
1.1.38-beta-23409 7,108 10/15/2015
1.1.38-beta-23225 139,872 9/1/2015
1.1.37 6,134,679 7/29/2015
1.1.37-beta-23109 22,364 7/27/2015
1.1.37-beta-23019 6,830 6/30/2015
1.1.36 8,974,058 5/11/2015
1.1.34-rc 32,542 3/6/2015
1.1.33-beta 668,728 12/10/2014
1.1.32-beta 255,050 10/10/2014

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