yelouafi

Algebraic Effects in JavaScript part 1 - continuations and control transfer

This is the first post of a series about Algebraic Effects and Handlers.

There are 2 ways to approach this topic:

• Denotational: explain Algebraic Effects in terms of their meaning in mathematics/Category theory
• Operational: explain the mechanic of Algebraic Effects by showing how they operate under a chosen runtime environment

Both approaches are valuables and give different insights on the topic. However, not everyone (including me), has the prerequisites to grasp the concepts of Category theory and Abstract Algebra. On the other hand, the operational approach is accessible to a much wider audience of programmers even if it doesn't provide the full picture.

miyaokamarina

// Licensed under CC BY 4.0.

type $If<X: boolean, Then, Else = empty> = $Call<
    & ((true, Then, Else) => Then)
    & ((false, Then, Else) => Else),
    X,
    Then,
    Else,
>;

raganwald

function * just (...values) {
  yield * values;
};

function first (iterable) {
  const iterator = iterable[Symbol.iterator]();

  const { done, value } = iterator.next();
  if (!done) return value;
};

stefanocudini

#!/bin/bash
#
# Copyright 2013 stefano.cudini@gmail.com
# http://labs.easyblog.it
#
# Nodejs Forever Demonizer with a low privilege user 
# official code: https://gist.github.com/stefanocudini/6116527
# tested on Debian Squeeze
#
# inspired by: