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Rx.v5-and-before.md

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Rx Release History v5.0 and Older

v5.0 changes

Rx.NET v5 is required for .NET 5 support of CSWinRT; earlier versions of Rx won't work correctly. To get the Windows API, you need to use the latest Windows SDK (19041), though you can target earlier versions of Windows.

Breaking changes In Windows, since the net5.0-windows10.0.19041 target now supports all Windows desktop object models, on UWP DispatcherObservable and releated SubscribeOn/ObserveOn were renamed to be CoreDispatcherObservable, SubscribeOnCoreDispatcher, and ObserveOnCoreDispatcher. This reflects the OS type names. Dispatcher refers only to the WPF type.

Supported Platforms

Rx 5.x supports the following platforms

  • .NET 5
  • .NET 5 with the Windows 10 19041 SDK (able to target earlier Windows versions)
  • .NET Framework 4.7
  • UWP 10.0.16299
  • .NET Standard 2.0

Support for older versions of UWP 10.0 has been removed.

v4.0 changes

Due to the overwhelming pain that fixing #205 - Implement assembly version strategy caused, we have refactored the libraries into a single library System.Reactive. To prevent breaking existing code that references the v3 libraries, we have facades with TypeForwarders to the new assembly. If you have a reference to a binary built against v3.0, then use the new System.Reactive.Compatibility package.

Supported Platforms

Rx 4.1 supports the following platforms

  • .NET Framework 4.6+
  • .NET Standard 2.0+ (including .NET Core, Xamarin and others)
  • UWP

Notably, Windows 8, Windows Phone 8 and legacy PCL libraries are no longer supported.

v3.0 breaking changes

The NuGet packages have changed their package naming in the move from v2.x.x to v3.0.0

This brings the NuGet package naming in line with NuGet guidelines and also the dominant namespace in each package. The strong name key has also changed, which is considered a breaking change. However, there are no expected API changes, therefore, once you make the NuGet change, no code changes should be necessary.