Anonymous iterators in C# with Ix

CSharpIterator.cs

var hello = "";
var enumerable = 
    EnumerableEx.Create<int>(async Yield => {
        await Yield.Return(100);
        await Yield.Return(200);
        hello = "hello world";
        await Yield.Return(300);
    });
Console.WriteLine(enumerable.ElementAt(1)); // 200
Console.WriteLine(hello); // empty
Console.WriteLine(enumerable.ElementAt(2)); // 300
Console.WriteLine(hello); // "hello world"

FSharpIterator.fs

let mutable hello = ""
let enumerable =
    seq {
        yield 100
        yield 200
        hello <- "hello world"
        yield 300
    }

printfn "%d" (enumerable.ElementAt 1) // 200
printfn "%s" hello // empty
printfn "%d" (enumerable.ElementAt 2) // 300
printfn "%s" hello // "hello world"

VBNETIterator.vb

Dim hello = ""
Dim enumerable =
    Iterator Function()
        Yield 100
        Yield 200
        hello = "hello world"
        Yield 300
    End Function
Console.WriteLine(enumerable().ElementAt(1)) ' 200
Console.WriteLine(hello) ' empty
Console.WriteLine(enumerable().ElementAt(2)) ' 300
Console.WriteLine(hello) ' "hello world"

Created a new issue: http://rx.codeplex.com/workitem/20 , going to sleep