lifted.el

Functional reactive programming library for Emacs Lisp

Quick Look

This is a rough draft of an FRP library for Emacs Lisp. I'm working from a number of inspirations, primarily ReactiveCocoa and Elm.

(defvar key-signal (lifted:signal-for-key (kbd "C-c s")))

(funcall key-signal
         :map            (lambda (value) (float-time))
         :defer
         :map            (lambda (value) (round value))
         :filter         (lambda (value) (= (% value 2) 0))
         :subscribe-next (lambda (value)
                           (message "subscriber reporting even rounded timestamp: %s" value)))

Chainable Operators

• lifted:defer
• lifted:filter
• lifted:flatten
• lifted:flatten-map
• lifted:map
• lifted:merge

TODO

There's a ton left to do!

• many more functional operators
• more diverse deferral options
• multicasting
• signal disposal
• error handling
• throttling/debouncing
• sequences & cold signals
• possibly reducing the number of funcalls
• cask build
• getting on MELPA

Acknowledgements

• emacs-deferred
• emacs-travis