scope-capture

Step into the shoes of your code

at the REPL

https://github.com/vvvvalvalval/scope-capture

Valentin Waeselynck

@val_waeselynck

What is scope-capture?

• Tooling as a library #lisp
• For easing REPL-aided development / debugging in Clojure(Script)
• By recording & restoring the context(*) of a code expression

(*) context: runtime bindings of local names

Demo

There's more

• Sub-REPLs (clojure.main, nREPL)
• Breakpoints
• Custom notifications

How is it useful?

Even more tangible programs:

• Much faster debugging
• Ad hoc exploration
• Accessibility:
  • for Clojure beginners
  • for new developers on the team
  • for occasional maintenance
• Opportunities for more tooling (IDE integrations etc.)

Comparison to other tools

• debuggers, loggers, tracers are useful for observation (witnessing execution)
• scope-capture is useful for intervention / improvisation (switching to manual mode)
• Closest to CIDER, Dirac
• Portable (CLJS), customizable

Thanks!

https://github.com/vvvvalvalval/scope-capture

Valentin Waeselynck

@val_waeselynck