scope-capture

Reproducting the context of your code at the REPL

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

What is scope-capture?

• Tooling as a library #lisp
• For easing REPL-based development /debugging
• By recording & restoring the runtime context (≈bindings of names) of a code expression
• Portable (CLJS), customizable, composable

Demo

Embracing Clojure (1/2)

This library leverages almost everything that makes Clojure special:

• Immutable values
  • for reliable snapshots
• A programmable compiler
  • via macros
  • simple scoping model

Embracing Clojure (2/2)

• Homoiconicity
  • for encoding messages between compilation and execution
• Dynamism
  • a mutable runtime (Vars)
  • dynamic typing
  • the REPL(s)!
• Shared-memory concurrency support

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.)

How to contribute?

• Use it, give feedback
• Experiment on many Clojure platforms / REPLs
  • ClojureScript, Planck, Lumo, Cider, Atom, GorillaREPL...
• Build more tooling on top!

Questions?

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