EECOLOR EECOLOR
EECOLOR
/ throttledChildAdded.js
Last active
July 2, 2019 22:37
— forked from iclems/Firebase Lazy-Safe Iterator
This snippet enables to iterate over a Firebase reference in a non-blocking way. If you need to iterate over a large reference, a child_added query may block your Firebase as it will query the whole data before iteration. With this snippet, children are retrieved one by one, making it slower / safer.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| module.exports = function throttledChildAdded(ref, callback, onError, sortChildKey = null /* uses `key` if null */) { | |
| const state = { stopped: false } | |
| let listener = null | |
| throttledChildAdded({ state, endReached: lastSeen => { listener = listenForNewChildren({ startAfter: lastSeen }) } }) | |
| return () => { | |
| state.stopped = true | |
| if (listener) ref.off('child_added', listener) |
EECOLOR
/ como.scala
Last active
August 29, 2015 14:15
— forked from paulp/como.scala
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package p { | |
| object Test { | |
| import construction.Monadic | |
| import execution.Bimonad | |
| def main(args: Array[String]): Unit = { | |
| val expression = Monadic[List](10) flatMap (1 to _ toList) coflatMap (_.sum) |
EECOLOR
/ freemonads.scala
Last active
August 29, 2015 14:02
— forked from runarorama/gist:a8fab38e473fafa0921d
Free monads
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| sealed trait Interact[A] | |
| case class Ask(prompt: String) | |
| extends Interact[String] | |
| case class Tell(msg: String) | |
| extends Interact[Unit] | |
| trait Monad[M[_]] { | |
| def pure[A](a: A): M[A] |