you make snapshots of the local variables at any point, and later evaluate code in the context of that snapshot. So you do some action in your program that results in that function being called, it'll save the input, you select that snapshot, and now you evaluate in the context of those function arguments as you edit and eval expressions in the function.
And while clojure supports interactive development at a level beyond other mainstream languages, Smalltalk and Common Lisp have support for it on another level, for example:
https://malisper.me/category/debugging-common-lisp/
There's some study where Smalltalk came out as the most productive language, I don't know whether it's more productive but that kind of interactive development where you build up your program evaluating it the whole time, without ever restarting, is a lot of fun. Why it went out of style I don't know
and then you can just evaluate expressions within the function. The fancy way with editor support is: https://github.com/vvvvalvalval/scope-capture-nrepl
you make snapshots of the local variables at any point, and later evaluate code in the context of that snapshot. So you do some action in your program that results in that function being called, it'll save the input, you select that snapshot, and now you evaluate in the context of those function arguments as you edit and eval expressions in the function. And while clojure supports interactive development at a level beyond other mainstream languages, Smalltalk and Common Lisp have support for it on another level, for example: https://malisper.me/category/debugging-common-lisp/
There's some study where Smalltalk came out as the most productive language, I don't know whether it's more productive but that kind of interactive development where you build up your program evaluating it the whole time, without ever restarting, is a lot of fun. Why it went out of style I don't know