What is System.Reactive.Linq.Observαble? (note the alpha)

Question

Whatever is System.Reactive.Linq.Observαble?

Note the Greek letter 'alpha' in place of the 'a'. Observαble not Observable

Found about a hundred classes (all internal) in this namespace in the assembly

// C:\Program Files (x86)\Microsoft SDKs\Reactive Extensions\v2.0\Binaries.NETFramework\v4.0\System.Reactive.Linq.dll // System.Reactive.Linq, Version=2.0.20823.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35

Answer 1

Per this comment from Bart de Smet :

You're seeing an internal namespace with a Greek alpha in its name to make the call stack look exactly like the methods you wrote. We can't have inner classes such as Where nested inside Observable, because there's already a method with that name. So, the closest approximation was an Observαble namespace with classes such as Where in it.

Unfortunately, the namespace shows up in IntelliSense at this point, due to some complexities around the IDE's handling of InternalsVisibleTo. We're aware of this problem and are looking into it.