REPL's aren't really interactive programming. In Bret Victor's demo, he makes a infinite loop and as he is typing, the mistake is immediately clear.
Pry is awesome though, it's just not really close to the things that Bret talks about. In fact, I think in one talk he specifically speaks against REPL's being interactive.
Pry is awesome though, it's just not really close to the things that Bret talks about. In fact, I think in one talk he specifically speaks against REPL's being interactive.