Downloads of v 1.0.34


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There is a newer prerelease version of this package available. See the version list below for details.

Microsoft Immutable Collections


This packages 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.

Supported Platforms:

- .NET Framework 4.5

- Windows 8

- Windows Phone Silverlight 8

- Windows Phone 8.1

- Portable Class Libraries

To install Microsoft Immutable Collections, run the following command in the Package Manager Console

PM> Install-Package Microsoft.Bcl.Immutable -Version 1.0.34

Requires NuGet 2.8.1 or higher.





Copyright © Microsoft Corporation



This package has no dependencies.

Version History

Version Downloads Last updated
Microsoft Immutable Collections 1.1.32-beta 252 Friday, October 10 2014
Microsoft Immutable Collections 1.1.29-beta 489 Wednesday, September 10 2014
Microsoft Immutable Collections 1.1.22-beta 4211 Wednesday, April 30 2014
Microsoft Immutable Collections 1.1.20-beta 34744 Friday, March 21 2014
Microsoft Immutable Collections 1.0.30 23958 Wednesday, November 13 2013
Microsoft Immutable Collections 1.0.27 4812 Thursday, September 26 2013
Microsoft Immutable Collections 1.0.23-rc 1429 Thursday, September 12 2013
Microsoft Immutable Collections 1.0.12-beta 3928 Monday, June 24 2013
Immutable Collections 1.0.8-beta 1183 Wednesday, March 06 2013
Immutable Collections 1.0.5-beta 1116 Wednesday, December 19 2012