Release the Microsoft.Experimental.Collections.MultiValueDictionary

[dsaf]

As far as I understand it is pretty much implemented, yet there were no updates for over 7 month and it is still alpha.

https://www.nuget.org/packages/Microsoft.Experimental.Collections

http://blogs.msdn.com/b/dotnet/archive/2014/08/05/multidictionary-becomes-multivaluedictionary.aspx

PS: is there a better GitHub repository to post it in?

[FiveTimesTheFun]

Thanks @dsaf - I was thinking about this recently. I was thinking about putting it first in https://github.com/dotnet/corefxlab until it became RTM quality.

[KrzysztofCwalina]

Yeah, seems like corefxlab would be a great place for this.

[sharwell]

So this is like ILookup<TKey, TValue>, except that it can be modified?

[dsaf]

Roslyn guys had to implement one themselves it seems:

https://github.com/dotnet/roslyn/blob/master/src/Compilers/Core/Portable/InternalUtilities/MultiDictionary.cs

[codekaizen]

Who owns the code for this and can commit it to corefxlab?

[joshfree]

/cc @ianhays

[ianhays]

Sorry for the delay; it's been real busy around here! I just pushed a PR dotnet/corefxlab#370 to get this into CorefxLab where we can continue iterating on it until it's ready for CoreFX. For now it is in it's own assembly: System.Collections.Generic.MultiValueDictionary. I tested it with some console apps running on the core framework and it works as expected.