I do mostly lisp these days, but your question brings me back to work I did with Smalltalk, one of the better integrated environments. It was so responsive and

I do mostly lisp these days, but your question brings me back to work I did with Smalltalk, one of the better integrated environments. It was so responsive and had effectively no compile cycle. At the end of an 8 hour day, i would be exhausted, as there was effectively no down time. (No time for sword play.)