In addition to rebuild times its often not possible to interact with symbols in the same way. For example, in C++ it may not be possible to rerun a snippet of

In addition to rebuild times its often not possible to interact with symbols in the same way. For example, in C++ it may not be possible to rerun a snippet of code in the debugger because those sources have been compiled out or not included. Realistically this means that the interactive user experience is vastly reduced due to the compilation process filtering out and modifying the original code. OP wants us to work on other languages but its hard to imagine a substantially different language that supports the same kind of user interaction. I guess we could expand on MATLAB or Octave but what would be the benefit from enabling a slightly different syntax? I think realistically the lack of advantage or differentiation from competing languages has made the proposition of contributing to other languages much less appealing.