Feature Request: Type inference for generic instance creation ("Diamond" operator)

[Nufflee]

C# should infer types when creating instances of generic objects.

So, instead of typing:

List<Dictionary<Dictionary<string, int>, int> myList = new List<Dictionary<Dictionary<string, int>, int>(); 

we could type:

List<Dictionary<Dictionary<string, int>, int> myList = new List<>(); 

This improves code readability but unlike var keyword, it keeps the type "close" to the identifier. I'm not aware of any drawbacks to this.

[DarthVella]

I want to say there's a proposal that would allow

List<Dictionary<Dictionary<string, int>, int> myList = new();

but my search-fu is failing me.

[Nufflee]

Oh, here it is, I wasn't aware of that. I think that's exactly this. Though that only talks about fields apparently. We would sure need this with properties and local variables too but I guess this isn't the best place to discuss that.

[jnm2]

The issue is #100 and would cover any place the new expression can be used.

[ufcpp]

dup of championed #1349

[Nufflee]

@ufcpp Not really, this is full type inference vs partial that's explained in that issue but this seems to be a dupe anyways, right?

[Joe4evr]

Please close.

[LeonG-ZA]

This is one thing I don't like about Java