Span<T> and friends not working in .NET Native UWP app

[zharchimage]

Basically my problem is described here

I cannot compile in .Net Native using System.Memory Span code. I get a .net native targets error.

[MichalStrehovsky]

System.Memory is in prerelease status and doesn't work yet with .NET Native. The next version of .NET Native compiler will have support for this.

[zharchimage]

You know when the next .Net Native version is gonna be available? Can't wait to use Span.

[MichalStrehovsky]

I'm not at liberty to talk about schedules - I suggest following the Visual Studio blog. I'll try to update this issue when it's available or a release date has been officially communicated.

[zharchimage]

Hi Michael, the release of .net core 2.1 happened yesterday, and System.Memory and Span nuget package is in release already. Still not compatible with .net Native. Do you have further information on when this is going to happen?

[davidfowl]

System.Memory has a bug in the package preventing it from being used in Xamarin apps and UWP apps. This is being rectified in a couple of weeks.

[zharchimage]

Thanks for the quick answer!

[davidfowl]

Here's the fix dotnet/corefx#29970

[MichalStrehovsky]

The .NET Native compiler that will work with System.Memory (including the prerelease version of the package that should otherwise not have the targeting issue) is included in Microsoft.NETCore.UniversalWindowsPlatform version 6.1.4 or later. Note that in order to use this version of the UWP platform package, you need to target the Fall Creators update of Windows 10 (an unfortunate side effect of NetStandard 2.0 support requiring new Windows APIs).

[zharchimage]

We have clients that are using older versions of Windows, so for compatibility purposes I have the following configuration:

So I won't be able to access to Span targeting 10240 right?