That sounds very useful, unfortunately I'm not using Ruby
You should
Well if you use purely C++ then that does exist for Visual Studio, kind of, don't always work.
I got the idea while watching Notch livestream for his Ludumdare project and noticed that he had the window for the game up while he was coding and when saved, the game was updated without him having to restart. Thought it was cool and since I saw it in action I really saw the usefulness and I thought "Why doesn't Ruby have it?" and made it
It was nice for like when doing the movement code for the camera you could instantly see the difference in the change. Or when programming enemies you can see their behaviour change directly without having to restart and walk the whole way there or code in special start conditions.