> Before the CLR was open sourced you could investigate how things were implemented by using decompilers on the MSIL code or later shared source, but but invest

> Before the CLR was open sourced you could investigate how things were implemented by using decompilers on the MSIL code or later shared source, but but investgations often stopped at a InternalCall just as things started to get interesting. Now you can see the whole story of how abstractions are implemented part in C# and part in C++ when the runtime needs to "bend the rules" of what C# would normally allow. Yep, that's a large part of the motivation for me writing this post, although after looking at the source, I then went back to WinDBG and the Microsoft Symbol Server, which I could've done before it was open sourced!! Thanks for the clarification on what the JIT is doing to optimise the string length. So far I've not managed to find the time to look at it's source, it took me long enough to find my way round CoreCLR! In the post, I sort-of hand-waved about what was happening there, it's nice to have some more concrete details.