> If you interactively change something and then delete the code that changed > it, the change will remain – but there's no longer any trace of where it came > from.
That tricky problem can be solved with
proc after_delete(code) =
File.append 'if_you_wonder_where_it_came_from_look_here.log', code
Run
> REPL-driven development throws away valuable test cases
Never heard about that problem, nether in Ruby nor in JS/TS :)
