[simula67]

It is also possible to do most of that with Python in Pycharm (except maybe jump behind?).

This is why going from Python to Go can feel like going backward. IMO, even compiled languages should have an "interpreted mode" for development. Once the development is complete, the code can still be compiled to get the benefits of runtime performance.

[whizzter]

It's mostly a matter of engineering, Visual C++ has had the ability to change function bodies and continuing running from the point of a crash (as long as data wasn't badly corrupted) since at least Visual Studio 6 (Yes, back in 1998!!!).