Michael W Powell

@zwvista If you're going to provide an aggregate extension, along the same lines as LINQ, and not dissimilar to the C++ range-based transform function, then I think you provide both:...

Ah @zwvista then it is I who have misunderstood.

Interesting... DU's, at least based on reading [Efficient discriminated unions in C#7](https://xoofx.com/blog/2016/10/28/efficient-discriminated-unions-in-csharp/), which [led me there](https://github.com/dotnet/roslyn/issues/9039), which led me here, starting to look a little... No, ***A LOT*** like Java...

@gafter Great point. I did not say they were identical, but pretty similar, or depending upon the accessors you apply to each instance.

@TahirAhmadov >If the intention is to "close" a class within in the boundaries of a compilation unit, such as a project, to be able to do things like exhaustive switch...

@vladd This was not the question. The question was literally along the lines of `Enumerations` in `CSharp`. End of story. Out here.

So what's the migration path for _postgresql_ again? Delete content and start from scratch? We do not have months; we want to be productive with this _YESTERDAY_. That or perhaps...

Bit cynical perhaps, yes. With this issue trying to decide which is a core _OrchardCore/CMS migration_ and which is not. Sounds like there is a customization which was inadvertently impacted,...

@jameswoodley Sure that's not really the question I have. I'm still not clear what the issue actually was, in a word or two? Is it something that needs to be...

@jameswoodley Huh, which to me beggars the larger question. Is it somewhat the point that _'the data'_ may also be considered _'the source'_? So a healthy migration should account for...