Hi,

I'm wondering what the story is for System.Linq.Dynamic.Core and types that aren't known till runtime. Is this supported right now, and if it's not, will it be one day?

Right now, I have an IEnumerable<dynamic> I can that I'd like to query. Is there any way I can compose a query on top of that? Is there any other way you know of for handling this case?
(The collection contains ExpandoObjects from a JSON payload deserialized by Json.NET. I see you have a test for JObjects but we don't want to be bound to that type as we may have multiple serializers.)

There is a test in there for verifying a Select on a collection of dynamic objects, but it's disabled right now.

Repro

Run this test.

//[Fact]
public void ExpressionTests_Select_ExpandoObjects()
{
    //Arrange
    dynamic a = new ExpandoObject();
    a.Name = "a";
    a.BlogId = 100;
    dynamic b = new ExpandoObject();
    b.Name = "b";
    b.BlogId = 100;
    var list = new List<dynamic> { a, b };
    IQueryable qry = list.AsQueryable();

    var result = qry.Select("it").Select("BlogId");

    //Assert
    Assert.Equal(new[] { 100, 200 }, result.ToDynamicArray<int>());
}

Expected

Passes.

Actual

It's commented out. It fails when running it:

Message: System.Linq.Dynamic.Core.Exceptions.ParseException : No property or field 'BlogId' exists in type 'Object'