Enable custom LINQ query evaluation (as in Immediate window)

assaft 4 weeks ago in New features 0

I have a collection named "actual", whose items contain an enum member named Type. I'd like to play with the collection in various ways, but Visual Studio's Immediate window wouldn't let me:

In this case, I wanted to see which types of items the collection contains - do we have any items of type X, how many items of type Y, etc. An OzCode-Immediate window would be very handy for me.