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I agree. That's the experience I have doing web development in Lisp. Most other languages have at least a deployment step, even if it's a scripting language that doesn't require compilation.

I'm getting this with a language that has a very high performance native compiler. And it's sad not more people use this.

What are you using now?

My own Objective-Smalltalk.

Here with a more traditionally interactive environment (so updates are applied when you save the method): https://www.youtube.com/watch?v=ArcClqt2vTc

Here in a really live environment I call CodeDraw, with updates computed on every keystroke (the "Run" button is just left-over UI, it doesn't do anything): https://www.youtube.com/watch?v=sypkOhE-ufs

Most interpreted or incrementally compiled systems should be able to do this.

Why wouldn't you include the name of said environment?