How about adding Range+Index to allow range syntax too?

[kzu]

Hey there,
I love your Nullable and IsExternalInit polyfills. I noticed there's another (slightly more involved) one that would be awesome to combine with those two: support for range syntax on NS2 (probably others too?).

The code needed to support that is basically https://github.com/devlooped/avatar/blob/main/src/Avatar.UnitTests/Range.cs (which I copy-pasted from corefx, since that was an earlier, simpler version), which you can see working on that net472 multi-targeting project. I use that same file in other NS2 projects too.

I'm just too lazy to clone the entire approach you already have, so I thought I might just suggest you do it instead, he :).

And FWIW, I think a meta-package that brought them all would be nice too :).

[AraHaan]

@kzu can you check if that Range and Index source will compile for NS1.0? I would like it to work with netstandard1.0 and the TFMs implementing it.

[kzu]

After adding System.ValueTuple package reference, enable <Nullable>true</Nullable> and <LangVersion>Latest</LangVersion>, as well as replacing one instance of Array.Empty<T> (which does not exist in NS1.0) with new T[0], it indeed does compile. Quite amazing :)